Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 7611:ff0a7943fd29
8005994: Method annotations are allocated unnecessarily during class file parsing
Summary: Also reviewed by: vitalyd@gmail.com
Reviewed-by: coleenp, acorn
| author | stefank |
|---|---|
| date | Tue, 15 Jan 2013 10:09:45 +0100 |
| parents | ade95d680b42 |
| children | f422634e5828 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/classLoader.hpp" | |
| 27 #include "classfile/javaAssertions.hpp" | |
| 28 #include "classfile/javaClasses.hpp" | |
| 29 #include "classfile/symbolTable.hpp" | |
| 30 #include "classfile/systemDictionary.hpp" | |
| 31 #include "classfile/vmSymbols.hpp" | |
| 32 #include "gc_interface/collectedHeap.inline.hpp" | |
| 33 #include "memory/oopFactory.hpp" | |
| 34 #include "memory/universe.inline.hpp" | |
| 3938 | 35 #include "oops/fieldStreams.hpp" |
| 1972 | 36 #include "oops/instanceKlass.hpp" |
| 37 #include "oops/objArrayKlass.hpp" | |
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38 #include "oops/method.hpp" |
| 1972 | 39 #include "prims/jvm.h" |
| 40 #include "prims/jvm_misc.hpp" | |
| 41 #include "prims/jvmtiExport.hpp" | |
| 42 #include "prims/jvmtiThreadState.hpp" | |
| 43 #include "prims/nativeLookup.hpp" | |
| 44 #include "prims/privilegedStack.hpp" | |
| 45 #include "runtime/arguments.hpp" | |
| 46 #include "runtime/dtraceJSDT.hpp" | |
| 47 #include "runtime/handles.inline.hpp" | |
| 48 #include "runtime/init.hpp" | |
| 49 #include "runtime/interfaceSupport.hpp" | |
| 50 #include "runtime/java.hpp" | |
| 51 #include "runtime/javaCalls.hpp" | |
| 52 #include "runtime/jfieldIDWorkaround.hpp" | |
| 53 #include "runtime/os.hpp" | |
| 54 #include "runtime/perfData.hpp" | |
| 55 #include "runtime/reflection.hpp" | |
| 56 #include "runtime/vframe.hpp" | |
| 57 #include "runtime/vm_operations.hpp" | |
| 58 #include "services/attachListener.hpp" | |
| 59 #include "services/management.hpp" | |
| 60 #include "services/threadService.hpp" | |
| 61 #include "utilities/copy.hpp" | |
| 62 #include "utilities/defaultStream.hpp" | |
| 63 #include "utilities/dtrace.hpp" | |
| 64 #include "utilities/events.hpp" | |
| 65 #include "utilities/histogram.hpp" | |
| 66 #include "utilities/top.hpp" | |
| 67 #include "utilities/utf8.hpp" | |
| 68 #ifdef TARGET_OS_FAMILY_linux | |
| 69 # include "jvm_linux.h" | |
| 70 #endif | |
| 71 #ifdef TARGET_OS_FAMILY_solaris | |
| 72 # include "jvm_solaris.h" | |
| 73 #endif | |
| 74 #ifdef TARGET_OS_FAMILY_windows | |
| 75 # include "jvm_windows.h" | |
| 76 #endif | |
| 3960 | 77 #ifdef TARGET_OS_FAMILY_bsd |
| 78 # include "jvm_bsd.h" | |
| 79 #endif | |
| 1972 | 80 |
| 0 | 81 #include <errno.h> |
| 82 | |
| 4006 | 83 #ifndef USDT2 |
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84 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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85 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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86 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
| 4006 | 87 #endif /* !USDT2 */ |
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88 |
| 0 | 89 /* |
| 90 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
| 91 such ctors and calls MUST NOT come between an oop declaration/init and its | |
| 92 usage because if objects are move this may cause various memory stomps, bus | |
| 93 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
| 94 failures": | |
| 95 | |
| 96 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
| 97 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 98 | |
| 99 // Object address to be held directly in mirror & not visible to GC | |
| 100 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
| 101 | |
| 102 // If this ctor can hit a safepoint, moving objects around, then | |
| 103 ComplexConstructor foo; | |
| 104 | |
| 105 // Boom! mirror may point to JUNK instead of the intended object | |
| 106 (some dereference of mirror) | |
| 107 | |
| 108 // Here's another call that may block for GC, making mirror stale | |
| 109 MutexLocker ml(some_lock); | |
| 110 | |
| 111 // And here's an initializer that can result in a stale oop | |
| 112 // all in one step. | |
| 113 oop o = call_that_can_throw_exception(TRAPS); | |
| 114 | |
| 115 | |
| 116 The solution is to keep the oop declaration BELOW the ctor or function | |
| 117 call that might cause a GC, do another resolve to reassign the oop, or | |
| 118 consider use of a Handle instead of an oop so there is immunity from object | |
| 119 motion. But note that the "QUICK" entries below do not have a handlemark | |
| 120 and thus can only support use of handles passed in. | |
| 121 */ | |
| 122 | |
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123 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
| 0 | 124 ResourceMark rm; |
| 125 int line_number = -1; | |
| 126 const char * source_file = NULL; | |
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127 const char * trace = "explicit"; |
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128 InstanceKlass* caller = NULL; |
| 0 | 129 JavaThread* jthread = JavaThread::current(); |
| 130 if (jthread->has_last_Java_frame()) { | |
| 131 vframeStream vfst(jthread); | |
| 132 | |
| 133 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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134 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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135 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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136 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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137 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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138 |
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139 Method* last_caller = NULL; |
| 0 | 140 |
| 141 while (!vfst.at_end()) { | |
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142 Method* m = vfst.method(); |
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143 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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144 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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145 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
| 0 | 146 break; |
| 147 } | |
| 148 last_caller = m; | |
| 149 vfst.next(); | |
| 150 } | |
| 151 // if this is called from Class.forName0 and that is called from Class.forName, | |
| 152 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
| 153 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
| 154 bool found_it = false; | |
| 155 if (!vfst.at_end() && | |
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156 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
| 0 | 157 vfst.method()->name() == vmSymbols::forName0_name()) { |
| 158 vfst.next(); | |
| 159 if (!vfst.at_end() && | |
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160 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
| 0 | 161 vfst.method()->name() == vmSymbols::forName_name()) { |
| 162 vfst.next(); | |
| 163 found_it = true; | |
| 164 } | |
| 165 } else if (last_caller != NULL && | |
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166 last_caller->method_holder()->name() == |
| 0 | 167 vmSymbols::java_lang_ClassLoader() && |
| 168 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
| 169 last_caller->name() == vmSymbols::loadClass_name())) { | |
| 170 found_it = true; | |
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171 } else if (!vfst.at_end()) { |
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172 if (vfst.method()->is_native()) { |
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173 // JNI call |
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174 found_it = true; |
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175 } |
| 0 | 176 } |
| 177 if (found_it && !vfst.at_end()) { | |
| 178 // found the caller | |
| 179 caller = vfst.method()->method_holder(); | |
| 180 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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181 if (line_number == -1) { |
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182 // show method name if it's a native method |
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183 trace = vfst.method()->name_and_sig_as_C_string(); |
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184 } |
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185 Symbol* s = caller->source_file_name(); |
| 0 | 186 if (s != NULL) { |
| 187 source_file = s->as_C_string(); | |
| 188 } | |
| 189 } | |
| 190 } | |
| 191 if (caller != NULL) { | |
| 192 if (to_class != caller) { | |
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193 const char * from = caller->external_name(); |
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194 const char * to = to_class->external_name(); |
| 0 | 195 // print in a single call to reduce interleaving between threads |
| 196 if (source_file != NULL) { | |
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197 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
| 0 | 198 } else { |
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199 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
| 0 | 200 } |
| 201 } | |
| 202 } | |
| 203 } | |
| 204 | |
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205 void trace_class_resolution(Klass* to_class) { |
| 0 | 206 EXCEPTION_MARK; |
| 207 trace_class_resolution_impl(to_class, THREAD); | |
| 208 if (HAS_PENDING_EXCEPTION) { | |
| 209 CLEAR_PENDING_EXCEPTION; | |
| 210 } | |
| 211 } | |
| 212 | |
| 213 // Wrapper to trace JVM functions | |
| 214 | |
| 215 #ifdef ASSERT | |
| 216 class JVMTraceWrapper : public StackObj { | |
| 217 public: | |
| 218 JVMTraceWrapper(const char* format, ...) { | |
| 219 if (TraceJVMCalls) { | |
| 220 va_list ap; | |
| 221 va_start(ap, format); | |
| 222 tty->print("JVM "); | |
| 223 tty->vprint_cr(format, ap); | |
| 224 va_end(ap); | |
| 225 } | |
| 226 } | |
| 227 }; | |
| 228 | |
| 229 Histogram* JVMHistogram; | |
| 230 volatile jint JVMHistogram_lock = 0; | |
| 231 | |
| 232 class JVMHistogramElement : public HistogramElement { | |
| 233 public: | |
| 234 JVMHistogramElement(const char* name); | |
| 235 }; | |
| 236 | |
| 237 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
| 238 _name = elementName; | |
| 239 uintx count = 0; | |
| 240 | |
| 241 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
| 242 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
| 243 count +=1; | |
| 244 if ( (WarnOnStalledSpinLock > 0) | |
| 245 && (count % WarnOnStalledSpinLock == 0)) { | |
| 246 warning("JVMHistogram_lock seems to be stalled"); | |
| 247 } | |
| 248 } | |
| 249 } | |
| 250 | |
| 251 if(JVMHistogram == NULL) | |
| 252 JVMHistogram = new Histogram("JVM Call Counts",100); | |
| 253 | |
| 254 JVMHistogram->add_element(this); | |
| 255 Atomic::dec(&JVMHistogram_lock); | |
| 256 } | |
| 257 | |
| 258 #define JVMCountWrapper(arg) \ | |
| 259 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
| 260 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
| 261 | |
| 262 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
| 263 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
| 264 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
| 265 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
| 266 #else | |
| 267 #define JVMWrapper(arg1) | |
| 268 #define JVMWrapper2(arg1, arg2) | |
| 269 #define JVMWrapper3(arg1, arg2, arg3) | |
| 270 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
| 271 #endif | |
| 272 | |
| 273 | |
| 274 // Interface version ///////////////////////////////////////////////////////////////////// | |
| 275 | |
| 276 | |
| 277 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
| 278 return JVM_INTERFACE_VERSION; | |
| 279 JVM_END | |
| 280 | |
| 281 | |
| 282 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
| 283 | |
| 284 | |
| 285 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
| 286 JVMWrapper("JVM_CurrentTimeMillis"); | |
| 287 return os::javaTimeMillis(); | |
| 288 JVM_END | |
| 289 | |
| 290 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
| 291 JVMWrapper("JVM_NanoTime"); | |
| 292 return os::javaTimeNanos(); | |
| 293 JVM_END | |
| 294 | |
| 295 | |
| 296 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
| 297 jobject dst, jint dst_pos, jint length)) | |
| 298 JVMWrapper("JVM_ArrayCopy"); | |
| 299 // Check if we have null pointers | |
| 300 if (src == NULL || dst == NULL) { | |
| 301 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 302 } | |
| 303 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
| 304 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
| 305 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
| 306 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
| 307 // Do copy | |
| 6983 | 308 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
| 0 | 309 JVM_END |
| 310 | |
| 311 | |
| 312 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
| 313 JavaValue r(T_OBJECT); | |
| 314 // public synchronized Object put(Object key, Object value); | |
| 315 HandleMark hm(THREAD); | |
| 316 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
| 317 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
| 318 JavaCalls::call_virtual(&r, | |
| 319 props, | |
| 1142 | 320 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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321 vmSymbols::put_name(), |
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322 vmSymbols::object_object_object_signature(), |
| 0 | 323 key_str, |
| 324 value_str, | |
| 325 THREAD); | |
| 326 } | |
| 327 | |
| 328 | |
| 329 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
| 330 | |
| 331 | |
| 332 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
| 333 JVMWrapper("JVM_InitProperties"); | |
| 334 ResourceMark rm; | |
| 335 | |
| 336 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 337 | |
| 338 // System property list includes both user set via -D option and | |
| 339 // jvm system specific properties. | |
| 340 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 341 PUTPROP(props, p->key(), p->value()); | |
| 342 } | |
| 343 | |
| 344 // Convert the -XX:MaxDirectMemorySize= command line flag | |
| 345 // to the sun.nio.MaxDirectMemorySize property. | |
| 346 // Do this after setting user properties to prevent people | |
| 347 // from setting the value with a -D option, as requested. | |
| 348 { | |
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349 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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350 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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351 } else { |
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352 char as_chars[256]; |
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353 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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354 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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355 } |
| 0 | 356 } |
| 357 | |
| 358 // JVM monitoring and management support | |
| 359 // Add the sun.management.compiler property for the compiler's name | |
| 360 { | |
| 361 #undef CSIZE | |
| 362 #if defined(_LP64) || defined(_WIN64) | |
| 363 #define CSIZE "64-Bit " | |
| 364 #else | |
| 365 #define CSIZE | |
| 366 #endif // 64bit | |
| 367 | |
| 368 #ifdef TIERED | |
| 369 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
| 370 #else | |
| 371 #if defined(COMPILER1) | |
| 372 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
| 373 #elif defined(COMPILER2) | |
| 374 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
| 375 #else | |
| 376 const char* compiler_name = ""; | |
| 377 #endif // compilers | |
| 378 #endif // TIERED | |
| 379 | |
| 380 if (*compiler_name != '\0' && | |
| 381 (Arguments::mode() != Arguments::_int)) { | |
| 382 PUTPROP(props, "sun.management.compiler", compiler_name); | |
| 383 } | |
| 384 } | |
| 385 | |
| 386 return properties; | |
| 387 JVM_END | |
| 388 | |
| 389 | |
| 390 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
| 391 | |
| 392 extern volatile jint vm_created; | |
| 393 | |
| 394 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
| 395 if (vm_created != 0 && (code == 0)) { | |
| 396 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
| 397 Universe::run_finalizers_on_exit(); | |
| 398 } | |
| 399 before_exit(thread); | |
| 400 vm_exit(code); | |
| 401 JVM_END | |
| 402 | |
| 403 | |
| 404 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
| 405 before_exit(thread); | |
| 406 vm_exit(code); | |
| 407 JVM_END | |
| 408 | |
| 409 | |
| 410 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
| 411 register_on_exit_function(func); | |
| 412 JVM_END | |
| 413 | |
| 414 | |
| 415 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
| 416 JVMWrapper("JVM_GC"); | |
| 417 if (!DisableExplicitGC) { | |
| 418 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
| 419 } | |
| 420 JVM_END | |
| 421 | |
| 422 | |
| 423 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
| 424 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
| 425 return Universe::heap()->millis_since_last_gc(); | |
| 426 JVM_END | |
| 427 | |
| 428 | |
| 429 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
| 430 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
| 431 JVM_END | |
| 432 | |
| 433 | |
| 434 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
| 435 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
| 436 JVM_END | |
| 437 | |
| 438 static inline jlong convert_size_t_to_jlong(size_t val) { | |
| 439 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
| 440 NOT_LP64 (return (jlong)val;) | |
| 441 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
| 442 } | |
| 443 | |
| 444 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
| 445 JVMWrapper("JVM_TotalMemory"); | |
| 446 size_t n = Universe::heap()->capacity(); | |
| 447 return convert_size_t_to_jlong(n); | |
| 448 JVM_END | |
| 449 | |
| 450 | |
| 451 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
| 452 JVMWrapper("JVM_FreeMemory"); | |
| 453 CollectedHeap* ch = Universe::heap(); | |
|
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454 size_t n; |
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455 { |
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456 MutexLocker x(Heap_lock); |
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457 n = ch->capacity() - ch->used(); |
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458 } |
| 0 | 459 return convert_size_t_to_jlong(n); |
| 460 JVM_END | |
| 461 | |
| 462 | |
| 463 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
| 464 JVMWrapper("JVM_MaxMemory"); | |
| 465 size_t n = Universe::heap()->max_capacity(); | |
| 466 return convert_size_t_to_jlong(n); | |
| 467 JVM_END | |
| 468 | |
| 469 | |
| 470 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
| 471 JVMWrapper("JVM_ActiveProcessorCount"); | |
| 472 return os::active_processor_count(); | |
| 473 JVM_END | |
| 474 | |
| 475 | |
| 476 | |
| 477 // java.lang.Throwable ////////////////////////////////////////////////////// | |
| 478 | |
| 479 | |
| 480 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
| 481 JVMWrapper("JVM_FillInStackTrace"); | |
| 482 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
| 483 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 484 JVM_END | |
| 485 | |
| 486 | |
| 487 JVM_ENTRY(void, JVM_PrintStackTrace(JNIEnv *env, jobject receiver, jobject printable)) | |
| 488 JVMWrapper("JVM_PrintStackTrace"); | |
| 489 // Note: This is no longer used in Merlin, but we still support it for compatibility. | |
| 490 oop exception = JNIHandles::resolve_non_null(receiver); | |
| 491 oop stream = JNIHandles::resolve_non_null(printable); | |
| 492 java_lang_Throwable::print_stack_trace(exception, stream); | |
| 493 JVM_END | |
| 494 | |
| 495 | |
| 496 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
| 497 JVMWrapper("JVM_GetStackTraceDepth"); | |
| 498 oop exception = JNIHandles::resolve(throwable); | |
| 499 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
| 500 JVM_END | |
| 501 | |
| 502 | |
| 503 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
| 504 JVMWrapper("JVM_GetStackTraceElement"); | |
| 505 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
| 506 oop exception = JNIHandles::resolve(throwable); | |
| 507 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
| 508 return JNIHandles::make_local(env, element); | |
| 509 JVM_END | |
| 510 | |
| 511 | |
| 512 // java.lang.Object /////////////////////////////////////////////// | |
| 513 | |
| 514 | |
| 515 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
| 516 JVMWrapper("JVM_IHashCode"); | |
| 517 // as implemented in the classic virtual machine; return 0 if object is NULL | |
| 518 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
| 519 JVM_END | |
| 520 | |
| 521 | |
| 522 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
| 523 JVMWrapper("JVM_MonitorWait"); | |
| 524 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 525 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
| 526 if (JvmtiExport::should_post_monitor_wait()) { | |
| 527 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
| 528 } | |
| 529 ObjectSynchronizer::wait(obj, ms, CHECK); | |
| 530 JVM_END | |
| 531 | |
| 532 | |
| 533 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
| 534 JVMWrapper("JVM_MonitorNotify"); | |
| 535 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 536 ObjectSynchronizer::notify(obj, CHECK); | |
| 537 JVM_END | |
| 538 | |
| 539 | |
| 540 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
| 541 JVMWrapper("JVM_MonitorNotifyAll"); | |
| 542 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 543 ObjectSynchronizer::notifyall(obj, CHECK); | |
| 544 JVM_END | |
| 545 | |
| 546 | |
| 547 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
| 548 JVMWrapper("JVM_Clone"); | |
| 549 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 550 const KlassHandle klass (THREAD, obj->klass()); | |
| 551 JvmtiVMObjectAllocEventCollector oam; | |
| 552 | |
| 553 #ifdef ASSERT | |
| 554 // Just checking that the cloneable flag is set correct | |
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555 if (obj->is_array()) { |
| 0 | 556 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
| 557 } else { | |
| 558 guarantee(obj->is_instance(), "should be instanceOop"); | |
| 1142 | 559 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
| 0 | 560 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
| 561 } | |
| 562 #endif | |
| 563 | |
| 564 // Check if class of obj supports the Cloneable interface. | |
| 565 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
| 566 if (!klass->is_cloneable()) { | |
| 567 ResourceMark rm(THREAD); | |
| 568 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
| 569 } | |
| 570 | |
| 571 // Make shallow object copy | |
| 572 const int size = obj->size(); | |
| 573 oop new_obj = NULL; | |
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574 if (obj->is_array()) { |
| 0 | 575 const int length = ((arrayOop)obj())->length(); |
| 576 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
| 577 } else { | |
| 578 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
| 579 } | |
| 580 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
| 581 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
| 582 // be suspended in the middle of copying the pointer and end up with parts | |
| 583 // of two different pointers in the field. Subsequent dereferences will crash. | |
| 584 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
| 585 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
| 586 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
| 587 // The same is true of StubRoutines::object_copy and the various oop_copy | |
| 588 // variants, and of the code generated by the inline_native_clone intrinsic. | |
| 589 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
| 590 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
| 591 (size_t)align_object_size(size) / HeapWordsPerLong); | |
| 592 // Clear the header | |
| 593 new_obj->init_mark(); | |
| 594 | |
| 595 // Store check (mark entire object and let gc sort it out) | |
| 596 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 597 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
| 598 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
| 599 | |
| 600 // Caution: this involves a java upcall, so the clone should be | |
| 601 // "gc-robust" by this stage. | |
| 602 if (klass->has_finalizer()) { | |
| 603 assert(obj->is_instance(), "should be instanceOop"); | |
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604 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
| 0 | 605 } |
| 606 | |
| 607 return JNIHandles::make_local(env, oop(new_obj)); | |
| 608 JVM_END | |
| 609 | |
| 610 // java.lang.Compiler //////////////////////////////////////////////////// | |
| 611 | |
| 612 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
| 613 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
| 614 // functions are all silently ignored unless JVM warnings are printed. | |
| 615 | |
| 616 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
| 617 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
| 618 JVM_END | |
| 619 | |
| 620 | |
| 621 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
| 622 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
| 623 return JNI_FALSE; | |
| 624 JVM_END | |
| 625 | |
| 626 | |
| 627 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
| 628 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
| 629 return JNI_FALSE; | |
| 630 JVM_END | |
| 631 | |
| 632 | |
| 633 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
| 634 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
| 635 return JNI_FALSE; | |
| 636 JVM_END | |
| 637 | |
| 638 | |
| 639 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
| 640 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
| 641 return NULL; | |
| 642 JVM_END | |
| 643 | |
| 644 | |
| 645 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
| 646 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
| 647 JVM_END | |
| 648 | |
| 649 | |
| 650 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
| 651 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
| 652 JVM_END | |
| 653 | |
| 654 | |
| 655 | |
| 656 // Error message support ////////////////////////////////////////////////////// | |
| 657 | |
| 658 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
| 659 JVMWrapper("JVM_GetLastErrorString"); | |
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660 return (jint)os::lasterror(buf, len); |
| 0 | 661 JVM_END |
| 662 | |
| 663 | |
| 664 // java.io.File /////////////////////////////////////////////////////////////// | |
| 665 | |
| 666 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
| 667 JVMWrapper2("JVM_NativePath (%s)", path); | |
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668 return os::native_path(path); |
| 0 | 669 JVM_END |
| 670 | |
| 671 | |
| 672 // Misc. class handling /////////////////////////////////////////////////////////// | |
| 673 | |
| 674 | |
| 675 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
| 676 JVMWrapper("JVM_GetCallerClass"); | |
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677 Klass* k = thread->security_get_caller_class(depth); |
| 6983 | 678 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 679 JVM_END |
| 680 | |
| 681 | |
| 682 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
| 683 JVMWrapper("JVM_FindPrimitiveClass"); | |
| 684 oop mirror = NULL; | |
| 685 BasicType t = name2type(utf); | |
| 686 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
| 687 mirror = Universe::java_mirror(t); | |
| 688 } | |
| 689 if (mirror == NULL) { | |
| 690 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
| 691 } else { | |
| 692 return (jclass) JNIHandles::make_local(env, mirror); | |
| 693 } | |
| 694 JVM_END | |
| 695 | |
| 696 | |
| 697 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
| 698 JVMWrapper("JVM_ResolveClass"); | |
| 699 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
| 700 JVM_END | |
| 701 | |
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702 |
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703 // Returns a class loaded by the bootstrap class loader; or null |
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704 // if not found. ClassNotFoundException is not thrown. |
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705 // |
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706 // Rationale behind JVM_FindClassFromBootLoader |
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707 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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708 // b> because of (a) java.dll has a direct dependecy on the unexported |
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709 // private symbol "_JVM_FindClassFromClassLoader@20". |
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710 // c> the launcher cannot use the private symbol as it dynamically opens |
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711 // the entry point, so if something changes, the launcher will fail |
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712 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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713 // stable exported interface. |
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714 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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715 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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716 // JVM_FindClassFromClassLoader and will not be backward compatible |
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717 // with older JDKs. |
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718 // Thus a public/stable exported entry point is the right solution, |
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719 // public here means public in linker semantics, and is exported only |
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720 // to the JDK, and is not intended to be a public API. |
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721 |
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722 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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723 const char* name)) |
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724 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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725 |
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726 // Java libraries should ensure that name is never null... |
|
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727 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
|
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728 // It's impossible to create this class; the name cannot fit |
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729 // into the constant pool. |
|
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730 return NULL; |
|
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|
731 } |
|
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732 |
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733 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
|
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734 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
|
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735 if (k == NULL) { |
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736 return NULL; |
|
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|
737 } |
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738 |
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739 if (TraceClassResolution) { |
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740 trace_class_resolution(k); |
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741 } |
| 6983 | 742 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
|
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743 JVM_END |
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744 |
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745 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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746 jboolean init, jobject loader, |
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747 jboolean throwError)) |
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748 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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749 throwError ? "error" : "exception"); |
| 388 | 750 // Java libraries should ensure that name is never null... |
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751 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 388 | 752 // It's impossible to create this class; the name cannot fit |
| 753 // into the constant pool. | |
| 754 if (throwError) { | |
| 755 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 756 } else { | |
| 757 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
| 758 } | |
| 759 } | |
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760 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 388 | 761 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
| 762 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 763 Handle(), throwError, THREAD); | |
| 764 | |
| 765 if (TraceClassResolution && result != NULL) { | |
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766 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
| 388 | 767 } |
| 768 return result; | |
| 0 | 769 JVM_END |
| 770 | |
| 771 | |
| 772 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
| 773 jboolean init, jclass from)) | |
| 774 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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775 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 0 | 776 // It's impossible to create this class; the name cannot fit |
| 777 // into the constant pool. | |
| 778 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 779 } | |
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780 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 0 | 781 oop from_class_oop = JNIHandles::resolve(from); |
|
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782 Klass* from_class = (from_class_oop == NULL) |
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783 ? (Klass*)NULL |
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784 : java_lang_Class::as_Klass(from_class_oop); |
| 0 | 785 oop class_loader = NULL; |
| 786 oop protection_domain = NULL; | |
| 787 if (from_class != NULL) { | |
| 6983 | 788 class_loader = from_class->class_loader(); |
| 789 protection_domain = from_class->protection_domain(); | |
| 0 | 790 } |
| 791 Handle h_loader(THREAD, class_loader); | |
| 792 Handle h_prot (THREAD, protection_domain); | |
| 793 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 794 h_prot, true, thread); | |
| 795 | |
| 796 if (TraceClassResolution && result != NULL) { | |
| 797 // this function is generally only used for class loading during verification. | |
| 798 ResourceMark rm; | |
| 799 oop from_mirror = JNIHandles::resolve_non_null(from); | |
|
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800 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
| 6983 | 801 const char * from_name = from_class->external_name(); |
| 0 | 802 |
| 803 oop mirror = JNIHandles::resolve_non_null(result); | |
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804 Klass* to_class = java_lang_Class::as_Klass(mirror); |
| 6983 | 805 const char * to = to_class->external_name(); |
| 0 | 806 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
| 807 } | |
| 808 | |
| 809 return result; | |
| 810 JVM_END | |
| 811 | |
| 812 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
| 813 if (loader.is_null()) { | |
| 814 return; | |
| 815 } | |
| 816 | |
| 817 // check whether the current caller thread holds the lock or not. | |
| 818 // If not, increment the corresponding counter | |
| 819 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
| 820 ObjectSynchronizer::owner_self) { | |
| 821 counter->inc(); | |
| 822 } | |
| 823 } | |
| 824 | |
| 825 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
|
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826 // and JVM_DefineClassWithSourceCond() |
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827 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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828 jobject loader, const jbyte *buf, |
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829 jsize len, jobject pd, const char *source, |
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830 jboolean verify, TRAPS) { |
|
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|
831 if (source == NULL) source = "__JVM_DefineClass__"; |
| 0 | 832 |
|
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833 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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834 JavaThread* jt = (JavaThread*) THREAD; |
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|
835 |
|
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|
836 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
|
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|
837 ClassLoader::perf_define_appclass_selftime(), |
|
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|
838 ClassLoader::perf_define_appclasses(), |
|
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|
839 jt->get_thread_stat()->perf_recursion_counts_addr(), |
|
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840 jt->get_thread_stat()->perf_timers_addr(), |
|
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|
841 PerfClassTraceTime::DEFINE_CLASS); |
|
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|
842 |
|
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|
843 if (UsePerfData) { |
|
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|
844 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
|
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|
845 } |
|
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|
846 |
| 0 | 847 // Since exceptions can be thrown, class initialization can take place |
| 848 // if name is NULL no check for class name in .class stream has to be made. | |
|
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849 TempNewSymbol class_name = NULL; |
| 0 | 850 if (name != NULL) { |
| 851 const int str_len = (int)strlen(name); | |
|
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|
852 if (str_len > Symbol::max_length()) { |
| 0 | 853 // It's impossible to create this class; the name cannot fit |
| 854 // into the constant pool. | |
| 855 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 856 } | |
|
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|
857 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
| 0 | 858 } |
| 859 | |
| 860 ResourceMark rm(THREAD); | |
| 861 ClassFileStream st((u1*) buf, len, (char *)source); | |
| 862 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
| 863 if (UsePerfData) { | |
| 864 is_lock_held_by_thread(class_loader, | |
| 865 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
| 866 THREAD); | |
| 867 } | |
| 868 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
|
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869 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
| 0 | 870 protection_domain, &st, |
|
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|
871 verify != 0, |
| 0 | 872 CHECK_NULL); |
| 873 | |
| 874 if (TraceClassResolution && k != NULL) { | |
| 875 trace_class_resolution(k); | |
| 876 } | |
| 877 | |
| 6983 | 878 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 879 } |
| 880 | |
| 881 | |
| 882 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
| 883 JVMWrapper2("JVM_DefineClass %s", name); | |
| 884 | |
|
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|
885 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
| 0 | 886 JVM_END |
| 887 | |
| 888 | |
| 889 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
| 890 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
| 891 | |
|
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|
892 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
|
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|
893 JVM_END |
|
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|
894 |
|
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|
895 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
|
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|
896 jobject loader, const jbyte *buf, |
|
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|
897 jsize len, jobject pd, |
|
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|
898 const char *source, jboolean verify)) |
|
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|
899 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
|
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|
900 |
|
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|
901 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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|
902 JVM_END |
| 0 | 903 |
| 904 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
| 905 JVMWrapper("JVM_FindLoadedClass"); | |
| 906 ResourceMark rm(THREAD); | |
| 907 | |
| 908 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 909 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
| 910 | |
| 911 const char* str = java_lang_String::as_utf8_string(string()); | |
| 912 // Sanity check, don't expect null | |
| 913 if (str == NULL) return NULL; | |
| 914 | |
| 915 const int str_len = (int)strlen(str); | |
|
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916 if (str_len > Symbol::max_length()) { |
| 0 | 917 // It's impossible to create this class; the name cannot fit |
| 918 // into the constant pool. | |
| 919 return NULL; | |
| 920 } | |
|
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921 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
| 0 | 922 |
| 923 // Security Note: | |
| 924 // The Java level wrapper will perform the necessary security check allowing | |
| 925 // us to pass the NULL as the initiating class loader. | |
| 926 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
| 927 if (UsePerfData) { | |
| 928 is_lock_held_by_thread(h_loader, | |
| 929 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
| 930 THREAD); | |
| 931 } | |
| 932 | |
|
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933 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
| 0 | 934 h_loader, |
| 935 Handle(), | |
| 936 CHECK_NULL); | |
| 937 | |
| 938 return (k == NULL) ? NULL : | |
| 6983 | 939 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 940 JVM_END |
| 941 | |
| 942 | |
| 943 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
| 944 | |
| 945 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
| 946 assert (cls != NULL, "illegal class"); | |
| 947 JVMWrapper("JVM_GetClassName"); | |
| 948 JvmtiVMObjectAllocEventCollector oam; | |
| 949 ResourceMark rm(THREAD); | |
| 950 const char* name; | |
| 951 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 952 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
| 953 } else { | |
| 954 // Consider caching interned string in Klass | |
|
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955 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 0 | 956 assert(k->is_klass(), "just checking"); |
| 6983 | 957 name = k->external_name(); |
| 0 | 958 } |
| 959 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
| 960 return (jstring) JNIHandles::make_local(env, result); | |
| 961 JVM_END | |
| 962 | |
| 963 | |
| 964 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
| 965 JVMWrapper("JVM_GetClassInterfaces"); | |
| 966 JvmtiVMObjectAllocEventCollector oam; | |
| 967 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 968 | |
| 969 // Special handling for primitive objects | |
| 970 if (java_lang_Class::is_primitive(mirror)) { | |
| 971 // Primitive objects does not have any interfaces | |
| 1142 | 972 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 973 return (jobjectArray) JNIHandles::make_local(env, r); |
| 974 } | |
| 975 | |
|
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976 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
| 0 | 977 // Figure size of result array |
| 978 int size; | |
| 979 if (klass->oop_is_instance()) { | |
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980 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
| 0 | 981 } else { |
| 982 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
| 983 size = 2; | |
| 984 } | |
| 985 | |
| 986 // Allocate result array | |
| 1142 | 987 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
| 0 | 988 objArrayHandle result (THREAD, r); |
| 989 // Fill in result | |
| 990 if (klass->oop_is_instance()) { | |
| 991 // Regular instance klass, fill in all local interfaces | |
| 992 for (int index = 0; index < size; index++) { | |
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993 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
| 6983 | 994 result->obj_at_put(index, k->java_mirror()); |
| 0 | 995 } |
| 996 } else { | |
| 997 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
| 6983 | 998 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
| 999 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
| 0 | 1000 } |
| 1001 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1002 JVM_END | |
| 1003 | |
| 1004 | |
| 1005 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
| 1006 JVMWrapper("JVM_GetClassLoader"); | |
| 1007 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1008 return NULL; | |
| 1009 } | |
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1010 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1011 oop loader = k->class_loader(); |
| 0 | 1012 return JNIHandles::make_local(env, loader); |
| 1013 JVM_END | |
| 1014 | |
| 1015 | |
| 1016 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
| 1017 JVMWrapper("JVM_IsInterface"); | |
| 1018 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1019 if (java_lang_Class::is_primitive(mirror)) { | |
| 1020 return JNI_FALSE; | |
| 1021 } | |
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1022 Klass* k = java_lang_Class::as_Klass(mirror); |
| 6983 | 1023 jboolean result = k->is_interface(); |
| 1024 assert(!result || k->oop_is_instance(), | |
| 0 | 1025 "all interfaces are instance types"); |
| 1026 // The compiler intrinsic for isInterface tests the | |
| 1027 // Klass::_access_flags bits in the same way. | |
| 1028 return result; | |
| 1029 JVM_END | |
| 1030 | |
| 1031 | |
| 1032 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
| 1033 JVMWrapper("JVM_GetClassSigners"); | |
| 1034 JvmtiVMObjectAllocEventCollector oam; | |
| 1035 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1036 // There are no signers for primitive types | |
| 1037 return NULL; | |
| 1038 } | |
| 1039 | |
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1040 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1041 objArrayOop signers = NULL; |
| 6983 | 1042 if (k->oop_is_instance()) { |
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1043 signers = InstanceKlass::cast(k)->signers(); |
| 0 | 1044 } |
| 1045 | |
| 1046 // If there are no signers set in the class, or if the class | |
| 1047 // is an array, return NULL. | |
| 1048 if (signers == NULL) return NULL; | |
| 1049 | |
| 1050 // copy of the signers array | |
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1051 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
| 0 | 1052 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
| 1053 for (int index = 0; index < signers->length(); index++) { | |
| 1054 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
| 1055 } | |
| 1056 | |
| 1057 // return the copy | |
| 1058 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
| 1059 JVM_END | |
| 1060 | |
| 1061 | |
| 1062 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
| 1063 JVMWrapper("JVM_SetClassSigners"); | |
| 1064 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1065 // This call is ignored for primitive types and arrays. | |
| 1066 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
| 1067 // be called with an array. Only the bootstrap loader creates arrays. | |
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1068 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1069 if (k->oop_is_instance()) { |
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1070 InstanceKlass::cast(k)->set_signers(objArrayOop(JNIHandles::resolve(signers))); |
| 0 | 1071 } |
| 1072 } | |
| 1073 JVM_END | |
| 1074 | |
| 1075 | |
| 1076 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
| 1077 JVMWrapper("JVM_GetProtectionDomain"); | |
| 1078 if (JNIHandles::resolve(cls) == NULL) { | |
| 1079 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 1080 } | |
| 1081 | |
| 1082 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1083 // Primitive types does not have a protection domain. | |
| 1084 return NULL; | |
| 1085 } | |
| 1086 | |
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1087 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1088 return (jobject) JNIHandles::make_local(env, k->protection_domain()); |
| 0 | 1089 JVM_END |
| 1090 | |
| 1091 | |
| 1092 // Obsolete since 1.2 (Class.setProtectionDomain removed), although | |
| 1093 // still defined in core libraries as of 1.5. | |
| 1094 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) | |
| 1095 JVMWrapper("JVM_SetProtectionDomain"); | |
| 1096 if (JNIHandles::resolve(cls) == NULL) { | |
| 1097 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1098 } | |
| 1099 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1100 // Call is ignored for primitive types | |
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1101 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 0 | 1102 |
| 1103 // cls won't be an array, as this called only from ClassLoader.defineClass | |
| 6983 | 1104 if (k->oop_is_instance()) { |
| 0 | 1105 oop pd = JNIHandles::resolve(protection_domain); |
| 1106 assert(pd == NULL || pd->is_oop(), "just checking"); | |
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1107 InstanceKlass::cast(k)->set_protection_domain(pd); |
| 0 | 1108 } |
| 1109 } | |
| 1110 JVM_END | |
| 1111 | |
| 1112 | |
| 1113 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
| 1114 JVMWrapper("JVM_DoPrivileged"); | |
| 1115 | |
| 1116 if (action == NULL) { | |
| 1117 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
| 1118 } | |
| 1119 | |
| 1120 // Stack allocated list of privileged stack elements | |
| 1121 PrivilegedElement pi; | |
| 1122 | |
| 1123 // Check that action object understands "Object run()" | |
| 1124 Handle object (THREAD, JNIHandles::resolve(action)); | |
| 1125 | |
| 1126 // get run() method | |
| 6983 | 1127 Method* m_oop = object->klass()->uncached_lookup_method( |
| 0 | 1128 vmSymbols::run_method_name(), |
| 1129 vmSymbols::void_object_signature()); | |
| 1130 methodHandle m (THREAD, m_oop); | |
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1131 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
| 0 | 1132 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
| 1133 } | |
| 1134 | |
| 1135 // Compute the frame initiating the do privileged operation and setup the privileged stack | |
| 1136 vframeStream vfst(thread); | |
| 1137 vfst.security_get_caller_frame(1); | |
| 1138 | |
| 1139 if (!vfst.at_end()) { | |
| 1140 pi.initialize(&vfst, JNIHandles::resolve(context), thread->privileged_stack_top(), CHECK_NULL); | |
| 1141 thread->set_privileged_stack_top(&pi); | |
| 1142 } | |
| 1143 | |
| 1144 | |
| 1145 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
| 1146 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
| 1147 Handle pending_exception; | |
| 1148 JavaValue result(T_OBJECT); | |
| 1149 JavaCallArguments args(object); | |
| 1150 JavaCalls::call(&result, m, &args, THREAD); | |
| 1151 | |
| 1152 // done with action, remove ourselves from the list | |
| 1153 if (!vfst.at_end()) { | |
| 1154 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
| 1155 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
| 1156 } | |
| 1157 | |
| 1158 if (HAS_PENDING_EXCEPTION) { | |
| 1159 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 1160 CLEAR_PENDING_EXCEPTION; | |
| 1161 | |
| 1142 | 1162 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
| 1163 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
| 0 | 1164 // Throw a java.security.PrivilegedActionException(Exception e) exception |
| 1165 JavaCallArguments args(pending_exception); | |
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1166 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1167 vmSymbols::exception_void_signature(), |
| 0 | 1168 &args); |
| 1169 } | |
| 1170 } | |
| 1171 | |
| 1172 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
| 1173 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
| 1174 JVM_END | |
| 1175 | |
| 1176 | |
| 1177 // Returns the inherited_access_control_context field of the running thread. | |
| 1178 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1179 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
| 1180 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
| 1181 return JNIHandles::make_local(env, result); | |
| 1182 JVM_END | |
| 1183 | |
| 1184 class RegisterArrayForGC { | |
| 1185 private: | |
| 1186 JavaThread *_thread; | |
| 1187 public: | |
| 1188 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
| 1189 _thread = thread; | |
| 1190 _thread->register_array_for_gc(array); | |
| 1191 } | |
| 1192 | |
| 1193 ~RegisterArrayForGC() { | |
| 1194 _thread->register_array_for_gc(NULL); | |
| 1195 } | |
| 1196 }; | |
| 1197 | |
| 1198 | |
| 1199 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1200 JVMWrapper("JVM_GetStackAccessControlContext"); | |
| 1201 if (!UsePrivilegedStack) return NULL; | |
| 1202 | |
| 1203 ResourceMark rm(THREAD); | |
| 1204 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
| 1205 JvmtiVMObjectAllocEventCollector oam; | |
| 1206 | |
| 1207 // count the protection domains on the execution stack. We collapse | |
| 1208 // duplicate consecutive protection domains into a single one, as | |
| 1209 // well as stopping when we hit a privileged frame. | |
| 1210 | |
| 1211 // Use vframeStream to iterate through Java frames | |
| 1212 vframeStream vfst(thread); | |
| 1213 | |
| 1214 oop previous_protection_domain = NULL; | |
| 1215 Handle privileged_context(thread, NULL); | |
| 1216 bool is_privileged = false; | |
| 1217 oop protection_domain = NULL; | |
| 1218 | |
| 1219 for(; !vfst.at_end(); vfst.next()) { | |
| 1220 // get method of frame | |
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1221 Method* method = vfst.method(); |
| 0 | 1222 intptr_t* frame_id = vfst.frame_id(); |
| 1223 | |
| 1224 // check the privileged frames to see if we have a match | |
| 1225 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
| 1226 // this frame is privileged | |
| 1227 is_privileged = true; | |
| 1228 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
| 1229 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
| 1230 } else { | |
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1231 protection_domain = method->method_holder()->protection_domain(); |
| 0 | 1232 } |
| 1233 | |
| 1234 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
| 1235 local_array->push(protection_domain); | |
| 1236 previous_protection_domain = protection_domain; | |
| 1237 } | |
| 1238 | |
| 1239 if (is_privileged) break; | |
| 1240 } | |
| 1241 | |
| 1242 | |
| 1243 // either all the domains on the stack were system domains, or | |
| 1244 // we had a privileged system domain | |
| 1245 if (local_array->is_empty()) { | |
| 1246 if (is_privileged && privileged_context.is_null()) return NULL; | |
| 1247 | |
| 1248 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
| 1249 return JNIHandles::make_local(env, result); | |
| 1250 } | |
| 1251 | |
| 1252 // the resource area must be registered in case of a gc | |
| 1253 RegisterArrayForGC ragc(thread, local_array); | |
| 1142 | 1254 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
| 0 | 1255 local_array->length(), CHECK_NULL); |
| 1256 objArrayHandle h_context(thread, context); | |
| 1257 for (int index = 0; index < local_array->length(); index++) { | |
| 1258 h_context->obj_at_put(index, local_array->at(index)); | |
| 1259 } | |
| 1260 | |
| 1261 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
| 1262 | |
| 1263 return JNIHandles::make_local(env, result); | |
| 1264 JVM_END | |
| 1265 | |
| 1266 | |
| 1267 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
| 1268 JVMWrapper("JVM_IsArrayClass"); | |
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1269 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1270 return (k != NULL) && k->oop_is_array() ? true : false; |
| 0 | 1271 JVM_END |
| 1272 | |
| 1273 | |
| 1274 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
| 1275 JVMWrapper("JVM_IsPrimitiveClass"); | |
| 1276 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1277 return (jboolean) java_lang_Class::is_primitive(mirror); | |
| 1278 JVM_END | |
| 1279 | |
| 1280 | |
| 1281 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
| 1282 JVMWrapper("JVM_GetComponentType"); | |
| 1283 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1284 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
| 1285 return (jclass) JNIHandles::make_local(env, result); | |
| 1286 JVM_END | |
| 1287 | |
| 1288 | |
| 1289 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
| 1290 JVMWrapper("JVM_GetClassModifiers"); | |
| 1291 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1292 // Primitive type | |
| 1293 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1294 } | |
| 1295 | |
| 6983 | 1296 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1297 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
| 1298 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
| 1299 return k->modifier_flags(); | |
| 1300 JVM_END | |
| 1301 | |
| 1302 | |
| 1303 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
| 1304 | |
| 1305 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
| 1306 JvmtiVMObjectAllocEventCollector oam; | |
| 1307 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1308 // of an InstanceKlass |
| 0 | 1309 |
| 1310 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1311 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 1142 | 1312 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1313 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1314 } | |
| 1315 | |
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1316 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1317 InnerClassesIterator iter(k); |
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1318 |
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1319 if (iter.length() == 0) { |
| 0 | 1320 // Neither an inner nor outer class |
| 1142 | 1321 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1322 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1323 } | |
| 1324 | |
| 1325 // find inner class info | |
| 1326 constantPoolHandle cp(thread, k->constants()); | |
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1327 int length = iter.length(); |
| 0 | 1328 |
| 1329 // Allocate temp. result array | |
| 1142 | 1330 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
| 0 | 1331 objArrayHandle result (THREAD, r); |
| 1332 int members = 0; | |
| 1333 | |
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1334 for (; !iter.done(); iter.next()) { |
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1335 int ioff = iter.inner_class_info_index(); |
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1336 int ooff = iter.outer_class_info_index(); |
| 0 | 1337 |
| 1338 if (ioff != 0 && ooff != 0) { | |
| 1339 // Check to see if the name matches the class we're looking for | |
| 1340 // before attempting to find the class. | |
| 1341 if (cp->klass_name_at_matches(k, ooff)) { | |
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1342 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
| 0 | 1343 if (outer_klass == k()) { |
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1344 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
| 0 | 1345 instanceKlassHandle inner_klass (THREAD, ik); |
| 1346 | |
| 1347 // Throws an exception if outer klass has not declared k as | |
| 1348 // an inner klass | |
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1349 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
| 0 | 1350 |
| 1351 result->obj_at_put(members, inner_klass->java_mirror()); | |
| 1352 members++; | |
| 1353 } | |
| 1354 } | |
| 1355 } | |
| 1356 } | |
| 1357 | |
| 1358 if (members != length) { | |
| 1359 // Return array of right length | |
| 1142 | 1360 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
| 0 | 1361 for(int i = 0; i < members; i++) { |
| 1362 res->obj_at_put(i, result->obj_at(i)); | |
| 1363 } | |
| 1364 return (jobjectArray)JNIHandles::make_local(env, res); | |
| 1365 } | |
| 1366 | |
| 1367 return (jobjectArray)JNIHandles::make_local(env, result()); | |
| 1368 JVM_END | |
| 1369 | |
| 1370 | |
| 1371 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1372 { |
| 0 | 1373 // ofClass is a reference to a java_lang_Class object. |
| 1374 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1375 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 0 | 1376 return NULL; |
| 1377 } | |
| 1378 | |
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1379 bool inner_is_member = false; |
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1380 Klass* outer_klass |
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1381 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1382 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1383 if (outer_klass == NULL) return NULL; // already a top-level class |
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1384 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
| 6983 | 1385 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1386 } |
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1387 JVM_END |
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1388 |
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1389 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1390 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
|
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1391 bool* inner_is_member, |
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1392 TRAPS) { |
|
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1393 Thread* thread = THREAD; |
|
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1394 InnerClassesIterator iter(k); |
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1395 if (iter.length() == 0) { |
| 0 | 1396 // No inner class info => no declaring class |
| 1397 return NULL; | |
| 1398 } | |
| 1399 | |
| 1400 constantPoolHandle i_cp(thread, k->constants()); | |
| 1401 | |
| 1402 bool found = false; | |
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1403 Klass* ok; |
| 0 | 1404 instanceKlassHandle outer_klass; |
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1405 *inner_is_member = false; |
| 0 | 1406 |
| 1407 // Find inner_klass attribute | |
|
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1408 for (; !iter.done() && !found; iter.next()) { |
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1409 int ioff = iter.inner_class_info_index(); |
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1410 int ooff = iter.outer_class_info_index(); |
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1411 int noff = iter.inner_name_index(); |
|
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1412 if (ioff != 0) { |
| 0 | 1413 // Check to see if the name matches the class we're looking for |
| 1414 // before attempting to find the class. | |
| 1415 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1416 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
|
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1417 found = (k() == inner_klass); |
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1418 if (found && ooff != 0) { |
| 0 | 1419 ok = i_cp->klass_at(ooff, CHECK_NULL); |
| 1420 outer_klass = instanceKlassHandle(thread, ok); | |
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1421 *inner_is_member = true; |
| 0 | 1422 } |
| 1423 } | |
| 1424 } | |
| 1425 } | |
| 1426 | |
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1427 if (found && outer_klass.is_null()) { |
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1428 // It may be anonymous; try for that. |
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1429 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1430 if (encl_method_class_idx != 0) { |
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1431 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1432 outer_klass = instanceKlassHandle(thread, ok); |
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1433 *inner_is_member = false; |
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1434 } |
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1435 } |
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1436 |
| 0 | 1437 // If no inner class attribute found for this class. |
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1438 if (outer_klass.is_null()) return NULL; |
| 0 | 1439 |
| 1440 // Throws an exception if outer klass has not declared k as an inner klass | |
|
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1441 // We need evidence that each klass knows about the other, or else |
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1442 // the system could allow a spoof of an inner class to gain access rights. |
|
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1443 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
|
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1444 return outer_klass(); |
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1445 } |
| 0 | 1446 |
| 1447 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
| 1448 assert (cls != NULL, "illegal class"); | |
| 1449 JVMWrapper("JVM_GetClassSignature"); | |
| 1450 JvmtiVMObjectAllocEventCollector oam; | |
| 1451 ResourceMark rm(THREAD); | |
| 1452 // Return null for arrays and primatives | |
| 1453 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1454 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1455 if (k->oop_is_instance()) { |
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1456 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
|
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1457 if (sym == NULL) return NULL; |
| 0 | 1458 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 1459 return (jstring) JNIHandles::make_local(env, str()); | |
| 1460 } | |
| 1461 } | |
| 1462 return NULL; | |
| 1463 JVM_END | |
| 1464 | |
| 1465 | |
| 1466 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
| 1467 assert (cls != NULL, "illegal class"); | |
| 1468 JVMWrapper("JVM_GetClassAnnotations"); | |
| 1469 ResourceMark rm(THREAD); | |
| 1470 // Return null for arrays and primitives | |
| 1471 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1472 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1473 if (k->oop_is_instance()) { |
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1474 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1475 return (jbyteArray) JNIHandles::make_local(env, a); |
| 0 | 1476 } |
| 1477 } | |
| 1478 return NULL; | |
| 1479 JVM_END | |
| 1480 | |
| 1481 | |
| 1482 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) | |
| 1483 assert(field != NULL, "illegal field"); | |
| 1484 JVMWrapper("JVM_GetFieldAnnotations"); | |
| 1485 | |
| 1486 // some of this code was adapted from from jni_FromReflectedField | |
| 1487 | |
| 1488 // field is a handle to a java.lang.reflect.Field object | |
| 1489 oop reflected = JNIHandles::resolve_non_null(field); | |
| 1490 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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1491 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1492 int slot = java_lang_reflect_Field::slot(reflected); |
| 1493 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 1494 | |
| 1495 fieldDescriptor fd; | |
| 1496 KlassHandle kh(THREAD, k); | |
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1497 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
| 0 | 1498 |
| 1499 if (modifiers & JVM_ACC_STATIC) { | |
| 1500 // for static fields we only look in the current class | |
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1501 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
| 0 | 1502 assert(false, "cannot find static field"); |
| 1503 return NULL; // robustness | |
| 1504 } | |
| 1505 } else { | |
| 1506 // for instance fields we start with the current class and work | |
| 1507 // our way up through the superclass chain | |
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1508 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
| 0 | 1509 assert(false, "cannot find instance field"); |
| 1510 return NULL; // robustness | |
| 1511 } | |
| 1512 } | |
| 1513 | |
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1514 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
| 0 | 1515 JVM_END |
| 1516 | |
| 1517 | |
|
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1518 static Method* jvm_get_method_common(jobject method) { |
| 0 | 1519 // some of this code was adapted from from jni_FromReflectedMethod |
| 1520 | |
| 1521 oop reflected = JNIHandles::resolve_non_null(method); | |
| 1522 oop mirror = NULL; | |
| 1523 int slot = 0; | |
| 1524 | |
| 1142 | 1525 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
| 0 | 1526 mirror = java_lang_reflect_Constructor::clazz(reflected); |
| 1527 slot = java_lang_reflect_Constructor::slot(reflected); | |
| 1528 } else { | |
| 1142 | 1529 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
| 0 | 1530 "wrong type"); |
| 1531 mirror = java_lang_reflect_Method::clazz(reflected); | |
| 1532 slot = java_lang_reflect_Method::slot(reflected); | |
| 1533 } | |
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1534 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1535 |
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1536 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
| 0 | 1537 if (m == NULL) { |
| 1538 assert(false, "cannot find method"); | |
| 1539 return NULL; // robustness | |
| 1540 } | |
| 1541 | |
| 1542 return m; | |
| 1543 } | |
| 1544 | |
| 1545 | |
| 1546 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
| 1547 JVMWrapper("JVM_GetMethodAnnotations"); | |
| 1548 | |
| 1549 // method is a handle to a java.lang.reflect.Method object | |
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1550 Method* m = jvm_get_method_common(method); |
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1551 return (jbyteArray) JNIHandles::make_local(env, |
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1552 Annotations::make_java_array(m->annotations(), THREAD)); |
| 0 | 1553 JVM_END |
| 1554 | |
| 1555 | |
| 1556 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
| 1557 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
| 1558 | |
| 1559 // method is a handle to a java.lang.reflect.Method object | |
|
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1560 Method* m = jvm_get_method_common(method); |
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1561 return (jbyteArray) JNIHandles::make_local(env, |
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1562 Annotations::make_java_array(m->annotation_default(), THREAD)); |
| 0 | 1563 JVM_END |
| 1564 | |
| 1565 | |
| 1566 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
| 1567 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
| 1568 | |
| 1569 // method is a handle to a java.lang.reflect.Method object | |
|
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1570 Method* m = jvm_get_method_common(method); |
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1571 return (jbyteArray) JNIHandles::make_local(env, |
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1572 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
| 0 | 1573 JVM_END |
| 1574 | |
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1575 /* Type use annotations support (JDK 1.8) */ |
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1576 |
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1577 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
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1578 assert (cls != NULL, "illegal class"); |
|
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1579 JVMWrapper("JVM_GetClassTypeAnnotations"); |
|
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1580 ResourceMark rm(THREAD); |
|
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1581 // Return null for arrays and primitives |
|
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1582 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
|
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1583 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
|
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1584 if (k->oop_is_instance()) { |
|
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1585 Annotations* type_annotations = InstanceKlass::cast(k)->type_annotations(); |
|
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1586 if (type_annotations != NULL) { |
|
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1587 typeArrayOop a = Annotations::make_java_array(type_annotations->class_annotations(), CHECK_NULL); |
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1588 return (jbyteArray) JNIHandles::make_local(env, a); |
|
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1589 } |
|
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1590 } |
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1591 } |
|
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1592 return NULL; |
|
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1593 JVM_END |
|
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1594 |
|
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1595 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
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1596 { |
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1597 JVMWrapper("JVM_GetMethodParameters"); |
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1598 // method is a handle to a java.lang.reflect.Method object |
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1599 Method* method_ptr = jvm_get_method_common(method); |
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1600 methodHandle mh (THREAD, method_ptr); |
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1601 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
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1602 const int num_params = mh->method_parameters_length(); |
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1603 |
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1604 if(0 != num_params) { |
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1605 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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1606 objArrayHandle result (THREAD, result_oop); |
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1607 |
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1608 for(int i = 0; i < num_params; i++) { |
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1609 MethodParametersElement* params = mh->method_parameters_start(); |
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1610 Symbol* const sym = mh->constants()->symbol_at(params[i].name_cp_index); |
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1611 oop param = Reflection::new_parameter(reflected_method, i, sym, |
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1612 params[i].flags, CHECK_NULL); |
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1613 result->obj_at_put(i, param); |
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1614 } |
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1615 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1616 } else { |
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1617 return (jobjectArray)NULL; |
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1618 } |
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1619 } |
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1620 JVM_END |
| 0 | 1621 |
| 1622 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
| 1623 | |
| 1624 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1625 { | |
| 1626 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 1627 JvmtiVMObjectAllocEventCollector oam; | |
| 1628 | |
| 1629 // Exclude primitive types and array types | |
| 1630 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1631 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1632 // Return empty array |
| 1142 | 1633 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
| 0 | 1634 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1635 } | |
| 1636 | |
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1637 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1638 constantPoolHandle cp(THREAD, k->constants()); |
| 1639 | |
| 1640 // Ensure class is linked | |
| 1641 k->link_class(CHECK_NULL); | |
| 1642 | |
| 1643 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
| 1644 bool skip_backtrace = false; | |
| 1645 | |
| 1646 // Allocate result | |
| 1647 int num_fields; | |
| 1648 | |
| 1649 if (publicOnly) { | |
| 1650 num_fields = 0; | |
| 3938 | 1651 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
| 1652 if (fs.access_flags().is_public()) ++num_fields; | |
| 0 | 1653 } |
| 1654 } else { | |
| 3938 | 1655 num_fields = k->java_fields_count(); |
| 0 | 1656 |
| 1142 | 1657 if (k() == SystemDictionary::Throwable_klass()) { |
| 0 | 1658 num_fields--; |
| 1659 skip_backtrace = true; | |
| 1660 } | |
| 1661 } | |
| 1662 | |
| 1142 | 1663 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
| 0 | 1664 objArrayHandle result (THREAD, r); |
| 1665 | |
| 1666 int out_idx = 0; | |
| 1667 fieldDescriptor fd; | |
| 3938 | 1668 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
| 0 | 1669 if (skip_backtrace) { |
| 1670 // 4496456 skip java.lang.Throwable.backtrace | |
| 3938 | 1671 int offset = fs.offset(); |
| 0 | 1672 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
| 1673 } | |
| 1674 | |
| 3938 | 1675 if (!publicOnly || fs.access_flags().is_public()) { |
| 1676 fd.initialize(k(), fs.index()); | |
| 0 | 1677 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
| 1678 result->obj_at_put(out_idx, field); | |
| 1679 ++out_idx; | |
| 1680 } | |
| 1681 } | |
| 1682 assert(out_idx == num_fields, "just checking"); | |
| 1683 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1684 } | |
| 1685 JVM_END | |
| 1686 | |
| 1687 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1688 { | |
| 1689 JVMWrapper("JVM_GetClassDeclaredMethods"); | |
| 1690 JvmtiVMObjectAllocEventCollector oam; | |
| 1691 | |
| 1692 // Exclude primitive types and array types | |
| 1693 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 6983 | 1694 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1695 // Return empty array |
| 1142 | 1696 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), 0, CHECK_NULL); |
| 0 | 1697 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1698 } | |
| 1699 | |
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1700 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1701 |
| 1702 // Ensure class is linked | |
| 1703 k->link_class(CHECK_NULL); | |
| 1704 | |
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1705 Array<Method*>* methods = k->methods(); |
| 0 | 1706 int methods_length = methods->length(); |
| 1707 int num_methods = 0; | |
| 1708 | |
| 1709 int i; | |
| 1710 for (i = 0; i < methods_length; i++) { | |
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1711 methodHandle method(THREAD, methods->at(i)); |
| 0 | 1712 if (!method->is_initializer()) { |
| 1713 if (!publicOnly || method->is_public()) { | |
| 1714 ++num_methods; | |
| 1715 } | |
| 1716 } | |
| 1717 } | |
| 1718 | |
| 1719 // Allocate result | |
| 1142 | 1720 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), num_methods, CHECK_NULL); |
| 0 | 1721 objArrayHandle result (THREAD, r); |
| 1722 | |
| 1723 int out_idx = 0; | |
| 1724 for (i = 0; i < methods_length; i++) { | |
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1725 methodHandle method(THREAD, methods->at(i)); |
| 0 | 1726 if (!method->is_initializer()) { |
| 1727 if (!publicOnly || method->is_public()) { | |
| 1728 oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); | |
| 1729 result->obj_at_put(out_idx, m); | |
| 1730 ++out_idx; | |
| 1731 } | |
| 1732 } | |
| 1733 } | |
| 1734 assert(out_idx == num_methods, "just checking"); | |
| 1735 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1736 } | |
| 1737 JVM_END | |
| 1738 | |
| 1739 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1740 { | |
| 1741 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
| 1742 JvmtiVMObjectAllocEventCollector oam; | |
| 1743 | |
| 1744 // Exclude primitive types and array types | |
| 1745 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 6983 | 1746 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1747 // Return empty array |
| 1142 | 1748 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), 0 , CHECK_NULL); |
| 0 | 1749 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1750 } | |
| 1751 | |
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1752 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1753 |
| 1754 // Ensure class is linked | |
| 1755 k->link_class(CHECK_NULL); | |
| 1756 | |
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1757 Array<Method*>* methods = k->methods(); |
| 0 | 1758 int methods_length = methods->length(); |
| 1759 int num_constructors = 0; | |
| 1760 | |
| 1761 int i; | |
| 1762 for (i = 0; i < methods_length; i++) { | |
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1763 methodHandle method(THREAD, methods->at(i)); |
| 0 | 1764 if (method->is_initializer() && !method->is_static()) { |
| 1765 if (!publicOnly || method->is_public()) { | |
| 1766 ++num_constructors; | |
| 1767 } | |
| 1768 } | |
| 1769 } | |
| 1770 | |
| 1771 // Allocate result | |
| 1142 | 1772 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), num_constructors, CHECK_NULL); |
| 0 | 1773 objArrayHandle result(THREAD, r); |
| 1774 | |
| 1775 int out_idx = 0; | |
| 1776 for (i = 0; i < methods_length; i++) { | |
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1777 methodHandle method(THREAD, methods->at(i)); |
| 0 | 1778 if (method->is_initializer() && !method->is_static()) { |
| 1779 if (!publicOnly || method->is_public()) { | |
| 1780 oop m = Reflection::new_constructor(method, CHECK_NULL); | |
| 1781 result->obj_at_put(out_idx, m); | |
| 1782 ++out_idx; | |
| 1783 } | |
| 1784 } | |
| 1785 } | |
| 1786 assert(out_idx == num_constructors, "just checking"); | |
| 1787 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1788 } | |
| 1789 JVM_END | |
| 1790 | |
| 1791 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
| 1792 { | |
| 1793 JVMWrapper("JVM_GetClassAccessFlags"); | |
| 1794 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1795 // Primitive type | |
| 1796 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1797 } | |
| 1798 | |
| 6983 | 1799 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1800 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
| 1801 } | |
| 1802 JVM_END | |
| 1803 | |
| 1804 | |
| 1805 // Constant pool access ////////////////////////////////////////////////////////// | |
| 1806 | |
| 1807 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
| 1808 { | |
| 1809 JVMWrapper("JVM_GetClassConstantPool"); | |
| 1810 JvmtiVMObjectAllocEventCollector oam; | |
| 1811 | |
| 1812 // Return null for primitives and arrays | |
| 1813 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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1814 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1815 if (k->oop_is_instance()) { |
| 0 | 1816 instanceKlassHandle k_h(THREAD, k); |
| 1817 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1818 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
| 0 | 1819 return JNIHandles::make_local(jcp()); |
| 1820 } | |
| 1821 } | |
| 1822 return NULL; | |
| 1823 } | |
| 1824 JVM_END | |
| 1825 | |
| 1826 | |
|
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1827 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
| 0 | 1828 { |
| 1829 JVMWrapper("JVM_ConstantPoolGetSize"); | |
|
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1830 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1831 return cp->length(); |
| 1832 } | |
| 1833 JVM_END | |
| 1834 | |
| 1835 | |
| 1836 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { | |
| 1837 if (!cp->is_within_bounds(index)) { | |
| 1838 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); | |
| 1839 } | |
| 1840 } | |
| 1841 | |
| 1842 | |
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1843 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1844 { |
| 1845 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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1846 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1847 bounds_check(cp, index, CHECK_NULL); |
| 1848 constantTag tag = cp->tag_at(index); | |
| 1849 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1850 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1851 } | |
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1852 Klass* k = cp->klass_at(index, CHECK_NULL); |
|
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1853 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 1854 } |
| 1855 JVM_END | |
| 1856 | |
| 1857 | |
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1858 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1859 { |
| 1860 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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1861 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1862 bounds_check(cp, index, CHECK_NULL); |
| 1863 constantTag tag = cp->tag_at(index); | |
| 1864 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1865 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1866 } | |
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1867 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
| 0 | 1868 if (k == NULL) return NULL; |
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1869 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 1870 } |
| 1871 JVM_END | |
| 1872 | |
| 1873 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 1874 constantTag tag = cp->tag_at(index); | |
| 1875 if (!tag.is_method() && !tag.is_interface_method()) { | |
| 1876 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1877 } | |
| 1878 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1879 Klass* k_o; |
| 0 | 1880 if (force_resolution) { |
| 1881 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 1882 } else { | |
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1883 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 1884 if (k_o == NULL) return NULL; |
| 1885 } | |
| 1886 instanceKlassHandle k(THREAD, k_o); | |
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1887 Symbol* name = cp->uncached_name_ref_at(index); |
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1888 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 1889 methodHandle m (THREAD, k->find_method(name, sig)); |
| 1890 if (m.is_null()) { | |
| 1891 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
| 1892 } | |
| 1893 oop method; | |
| 1894 if (!m->is_initializer() || m->is_static()) { | |
| 1895 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
| 1896 } else { | |
| 1897 method = Reflection::new_constructor(m, CHECK_NULL); | |
| 1898 } | |
| 1899 return JNIHandles::make_local(method); | |
| 1900 } | |
| 1901 | |
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1902 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1903 { |
| 1904 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
| 1905 JvmtiVMObjectAllocEventCollector oam; | |
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1906 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1907 bounds_check(cp, index, CHECK_NULL); |
| 1908 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
| 1909 return res; | |
| 1910 } | |
| 1911 JVM_END | |
| 1912 | |
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1913 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1914 { |
| 1915 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
| 1916 JvmtiVMObjectAllocEventCollector oam; | |
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1917 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1918 bounds_check(cp, index, CHECK_NULL); |
| 1919 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
| 1920 return res; | |
| 1921 } | |
| 1922 JVM_END | |
| 1923 | |
| 1924 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 1925 constantTag tag = cp->tag_at(index); | |
| 1926 if (!tag.is_field()) { | |
| 1927 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1928 } | |
| 1929 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1930 Klass* k_o; |
| 0 | 1931 if (force_resolution) { |
| 1932 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 1933 } else { | |
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1934 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 1935 if (k_o == NULL) return NULL; |
| 1936 } | |
| 1937 instanceKlassHandle k(THREAD, k_o); | |
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1938 Symbol* name = cp->uncached_name_ref_at(index); |
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1939 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 1940 fieldDescriptor fd; |
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1941 Klass* target_klass = k->find_field(name, sig, &fd); |
| 0 | 1942 if (target_klass == NULL) { |
| 1943 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
| 1944 } | |
| 1945 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
| 1946 return JNIHandles::make_local(field); | |
| 1947 } | |
| 1948 | |
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1949 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
| 0 | 1950 { |
| 1951 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
| 1952 JvmtiVMObjectAllocEventCollector oam; | |
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1953 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1954 bounds_check(cp, index, CHECK_NULL); |
| 1955 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
| 1956 return res; | |
| 1957 } | |
| 1958 JVM_END | |
| 1959 | |
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1960 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1961 { |
| 1962 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
| 1963 JvmtiVMObjectAllocEventCollector oam; | |
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1964 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1965 bounds_check(cp, index, CHECK_NULL); |
| 1966 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
| 1967 return res; | |
| 1968 } | |
| 1969 JVM_END | |
| 1970 | |
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1971 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1972 { |
| 1973 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
| 1974 JvmtiVMObjectAllocEventCollector oam; | |
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1975 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1976 bounds_check(cp, index, CHECK_NULL); |
| 1977 constantTag tag = cp->tag_at(index); | |
| 1978 if (!tag.is_field_or_method()) { | |
| 1979 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1980 } | |
| 1981 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1982 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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1983 Symbol* member_name = cp->uncached_name_ref_at(index); |
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1984 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
| 1142 | 1985 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
| 0 | 1986 objArrayHandle dest(THREAD, dest_o); |
| 1987 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
| 1988 dest->obj_at_put(0, str()); | |
| 1989 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
| 1990 dest->obj_at_put(1, str()); | |
| 1991 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
| 1992 dest->obj_at_put(2, str()); | |
| 1993 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 1994 } | |
| 1995 JVM_END | |
| 1996 | |
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1997 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1998 { |
| 1999 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2000 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2001 bounds_check(cp, index, CHECK_0); |
| 2002 constantTag tag = cp->tag_at(index); | |
| 2003 if (!tag.is_int()) { | |
| 2004 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2005 } | |
| 2006 return cp->int_at(index); | |
| 2007 } | |
| 2008 JVM_END | |
| 2009 | |
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2010 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2011 { |
| 2012 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2013 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2014 bounds_check(cp, index, CHECK_(0L)); |
| 2015 constantTag tag = cp->tag_at(index); | |
| 2016 if (!tag.is_long()) { | |
| 2017 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2018 } | |
| 2019 return cp->long_at(index); | |
| 2020 } | |
| 2021 JVM_END | |
| 2022 | |
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2023 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2024 { |
| 2025 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2026 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2027 bounds_check(cp, index, CHECK_(0.0f)); |
| 2028 constantTag tag = cp->tag_at(index); | |
| 2029 if (!tag.is_float()) { | |
| 2030 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2031 } | |
| 2032 return cp->float_at(index); | |
| 2033 } | |
| 2034 JVM_END | |
| 2035 | |
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2036 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2037 { |
| 2038 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2039 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2040 bounds_check(cp, index, CHECK_(0.0)); |
| 2041 constantTag tag = cp->tag_at(index); | |
| 2042 if (!tag.is_double()) { | |
| 2043 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2044 } | |
| 2045 return cp->double_at(index); | |
| 2046 } | |
| 2047 JVM_END | |
| 2048 | |
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2049 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2050 { |
| 2051 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2052 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2053 bounds_check(cp, index, CHECK_NULL); |
| 2054 constantTag tag = cp->tag_at(index); | |
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2055 if (!tag.is_string()) { |
| 0 | 2056 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
| 2057 } | |
| 2058 oop str = cp->string_at(index, CHECK_NULL); | |
| 2059 return (jstring) JNIHandles::make_local(str); | |
| 2060 } | |
| 2061 JVM_END | |
| 2062 | |
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2063 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2064 { |
| 2065 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
| 2066 JvmtiVMObjectAllocEventCollector oam; | |
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2067 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2068 bounds_check(cp, index, CHECK_NULL); |
| 2069 constantTag tag = cp->tag_at(index); | |
| 2070 if (!tag.is_symbol()) { | |
| 2071 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2072 } | |
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2073 Symbol* sym = cp->symbol_at(index); |
| 0 | 2074 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 2075 return (jstring) JNIHandles::make_local(str()); | |
| 2076 } | |
| 2077 JVM_END | |
| 2078 | |
| 2079 | |
| 2080 // Assertion support. ////////////////////////////////////////////////////////// | |
| 2081 | |
| 2082 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
| 2083 JVMWrapper("JVM_DesiredAssertionStatus"); | |
| 2084 assert(cls != NULL, "bad class"); | |
| 2085 | |
| 2086 oop r = JNIHandles::resolve(cls); | |
| 2087 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
| 2088 if (java_lang_Class::is_primitive(r)) return false; | |
| 2089 | |
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2090 Klass* k = java_lang_Class::as_Klass(r); |
| 6983 | 2091 assert(k->oop_is_instance(), "must be an instance klass"); |
| 2092 if (! k->oop_is_instance()) return false; | |
| 0 | 2093 |
| 2094 ResourceMark rm(THREAD); | |
| 6983 | 2095 const char* name = k->name()->as_C_string(); |
| 2096 bool system_class = k->class_loader() == NULL; | |
| 0 | 2097 return JavaAssertions::enabled(name, system_class); |
| 2098 | |
| 2099 JVM_END | |
| 2100 | |
| 2101 | |
| 2102 // Return a new AssertionStatusDirectives object with the fields filled in with | |
| 2103 // command-line assertion arguments (i.e., -ea, -da). | |
| 2104 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
| 2105 JVMWrapper("JVM_AssertionStatusDirectives"); | |
| 2106 JvmtiVMObjectAllocEventCollector oam; | |
| 2107 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
| 2108 return JNIHandles::make_local(env, asd); | |
| 2109 JVM_END | |
| 2110 | |
| 2111 // Verification //////////////////////////////////////////////////////////////////////////////// | |
| 2112 | |
| 2113 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
| 2114 | |
| 2115 // RedefineClasses support: bug 6214132 caused verification to fail. | |
| 2116 // All functions from this section should call the jvmtiThreadSate function: | |
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2117 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2118 // The function returns a Klass* of the _scratch_class if the verifier |
| 0 | 2119 // was invoked in the middle of the class redefinition. |
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2120 // Otherwise it returns its argument value which is the _the_class Klass*. |
| 0 | 2121 // Please, refer to the description in the jvmtiThreadSate.hpp. |
| 2122 | |
| 2123 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
| 2124 JVMWrapper("JVM_GetClassNameUTF"); | |
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2125 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2126 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2127 return k->name()->as_utf8(); |
| 0 | 2128 JVM_END |
| 2129 | |
| 2130 | |
| 2131 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
| 2132 JVMWrapper("JVM_GetClassCPTypes"); | |
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2133 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2134 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2135 // types will have length zero if this is not an InstanceKlass |
| 0 | 2136 // (length is determined by call to JVM_GetClassCPEntriesCount) |
| 6983 | 2137 if (k->oop_is_instance()) { |
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2138 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2139 for (int index = cp->length() - 1; index >= 0; index--) { |
| 2140 constantTag tag = cp->tag_at(index); | |
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2141 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
| 0 | 2142 } |
| 2143 } | |
| 2144 JVM_END | |
| 2145 | |
| 2146 | |
| 2147 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
| 2148 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2149 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2150 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2151 if (!k->oop_is_instance()) |
| 0 | 2152 return 0; |
|
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2153 return InstanceKlass::cast(k)->constants()->length(); |
| 0 | 2154 JVM_END |
| 2155 | |
| 2156 | |
| 2157 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
| 2158 JVMWrapper("JVM_GetClassFieldsCount"); | |
|
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2159 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2160 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2161 if (!k->oop_is_instance()) |
| 0 | 2162 return 0; |
|
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2163 return InstanceKlass::cast(k)->java_fields_count(); |
| 0 | 2164 JVM_END |
| 2165 | |
| 2166 | |
| 2167 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
| 2168 JVMWrapper("JVM_GetClassMethodsCount"); | |
|
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2169 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2170 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2171 if (!k->oop_is_instance()) |
| 0 | 2172 return 0; |
|
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2173 return InstanceKlass::cast(k)->methods()->length(); |
| 0 | 2174 JVM_END |
| 2175 | |
| 2176 | |
| 2177 // The following methods, used for the verifier, are never called with | |
|
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2178 // array klasses, so a direct cast to InstanceKlass is safe. |
| 0 | 2179 // Typically, these methods are called in a loop with bounds determined |
| 2180 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
| 2181 // zero for arrays. | |
| 2182 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
| 2183 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
|
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2184 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2185 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2186 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2187 int length = method->checked_exceptions_length(); |
| 0 | 2188 if (length > 0) { |
|
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2189 CheckedExceptionElement* table= method->checked_exceptions_start(); |
| 0 | 2190 for (int i = 0; i < length; i++) { |
| 2191 exceptions[i] = table[i].class_cp_index; | |
| 2192 } | |
| 2193 } | |
| 2194 JVM_END | |
| 2195 | |
| 2196 | |
| 2197 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
| 2198 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
|
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2199 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2200 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2201 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2202 return method->checked_exceptions_length(); |
| 0 | 2203 JVM_END |
| 2204 | |
| 2205 | |
| 2206 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
| 2207 JVMWrapper("JVM_GetMethodIxByteCode"); | |
|
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2208 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2209 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2210 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2211 memcpy(code, method->code_base(), method->code_size()); |
| 0 | 2212 JVM_END |
| 2213 | |
| 2214 | |
| 2215 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
| 2216 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
|
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2217 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2218 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2219 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2220 return method->code_size(); |
| 0 | 2221 JVM_END |
| 2222 | |
| 2223 | |
| 2224 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
| 2225 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
|
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2226 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2227 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2228 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2229 ExceptionTable extable(method); |
|
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2230 entry->start_pc = extable.start_pc(entry_index); |
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2231 entry->end_pc = extable.end_pc(entry_index); |
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2232 entry->handler_pc = extable.handler_pc(entry_index); |
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2233 entry->catchType = extable.catch_type_index(entry_index); |
| 0 | 2234 JVM_END |
| 2235 | |
| 2236 | |
| 2237 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
| 2238 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
|
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2239 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2240 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2241 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2242 return method->exception_table_length(); |
| 0 | 2243 JVM_END |
| 2244 | |
| 2245 | |
| 2246 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
| 2247 JVMWrapper("JVM_GetMethodIxModifiers"); | |
|
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2248 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2249 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2250 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2251 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
| 0 | 2252 JVM_END |
| 2253 | |
| 2254 | |
| 2255 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
| 2256 JVMWrapper("JVM_GetFieldIxModifiers"); | |
|
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2257 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2258 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2259 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
| 0 | 2260 JVM_END |
| 2261 | |
| 2262 | |
| 2263 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
| 2264 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
|
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2265 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2266 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2267 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2268 return method->max_locals(); |
| 0 | 2269 JVM_END |
| 2270 | |
| 2271 | |
| 2272 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
| 2273 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
|
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2274 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2275 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2276 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2277 return method->size_of_parameters(); |
| 0 | 2278 JVM_END |
| 2279 | |
| 2280 | |
| 2281 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
| 2282 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
|
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2283 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2284 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2285 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2286 return method->verifier_max_stack(); |
| 0 | 2287 JVM_END |
| 2288 | |
| 2289 | |
| 2290 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
| 2291 JVMWrapper("JVM_IsConstructorIx"); | |
| 2292 ResourceMark rm(THREAD); | |
|
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2293 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2294 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2295 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2296 return method->name() == vmSymbols::object_initializer_name(); |
| 0 | 2297 JVM_END |
| 2298 | |
| 2299 | |
| 2300 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2301 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
|
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2302 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2303 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2304 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2305 return method->name()->as_utf8(); |
| 0 | 2306 JVM_END |
| 2307 | |
| 2308 | |
| 2309 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2310 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
|
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2311 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2312 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2313 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2314 return method->signature()->as_utf8(); |
| 0 | 2315 JVM_END |
| 2316 | |
| 2317 /** | |
| 2318 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
| 2319 * read entries in the constant pool. Since the old verifier always | |
| 2320 * works on a copy of the code, it will not see any rewriting that | |
| 2321 * may possibly occur in the middle of verification. So it is important | |
| 2322 * that nothing it calls tries to use the cpCache instead of the raw | |
| 2323 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
| 2324 */ | |
| 2325 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2326 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
|
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2327 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2328 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2329 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2330 switch (cp->tag_at(cp_index).value()) { |
| 2331 case JVM_CONSTANT_Fieldref: | |
| 2332 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
| 2333 default: | |
| 2334 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
| 2335 } | |
| 2336 ShouldNotReachHere(); | |
| 2337 return NULL; | |
| 2338 JVM_END | |
| 2339 | |
| 2340 | |
| 2341 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2342 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
|
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2343 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2344 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2345 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2346 switch (cp->tag_at(cp_index).value()) { |
| 2347 case JVM_CONSTANT_InterfaceMethodref: | |
| 2348 case JVM_CONSTANT_Methodref: | |
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2349 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2350 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
| 2351 default: | |
| 2352 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
| 2353 } | |
| 2354 ShouldNotReachHere(); | |
| 2355 return NULL; | |
| 2356 JVM_END | |
| 2357 | |
| 2358 | |
| 2359 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2360 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
|
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2361 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2362 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2363 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2364 switch (cp->tag_at(cp_index).value()) { |
| 2365 case JVM_CONSTANT_InterfaceMethodref: | |
| 2366 case JVM_CONSTANT_Methodref: | |
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2367 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2368 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
| 2369 default: | |
| 2370 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
| 2371 } | |
| 2372 ShouldNotReachHere(); | |
| 2373 return NULL; | |
| 2374 JVM_END | |
| 2375 | |
| 2376 | |
| 2377 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2378 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
|
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2379 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2380 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2381 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2382 switch (cp->tag_at(cp_index).value()) { |
| 2383 case JVM_CONSTANT_Fieldref: | |
| 2384 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
| 2385 default: | |
| 2386 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
| 2387 } | |
| 2388 ShouldNotReachHere(); | |
| 2389 return NULL; | |
| 2390 JVM_END | |
| 2391 | |
| 2392 | |
| 2393 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2394 JVMWrapper("JVM_GetCPClassNameUTF"); | |
|
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|
2395 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2396 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2397 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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|
2398 Symbol* classname = cp->klass_name_at(cp_index); |
| 0 | 2399 return classname->as_utf8(); |
| 2400 JVM_END | |
| 2401 | |
| 2402 | |
| 2403 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2404 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
|
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|
2405 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2406 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2407 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2408 switch (cp->tag_at(cp_index).value()) { |
| 2409 case JVM_CONSTANT_Fieldref: { | |
| 2410 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2411 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2412 return classname->as_utf8(); |
| 2413 } | |
| 2414 default: | |
| 2415 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
| 2416 } | |
| 2417 ShouldNotReachHere(); | |
| 2418 return NULL; | |
| 2419 JVM_END | |
| 2420 | |
| 2421 | |
| 2422 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2423 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
|
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|
2424 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2425 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2426 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2427 switch (cp->tag_at(cp_index).value()) { |
| 2428 case JVM_CONSTANT_Methodref: | |
| 2429 case JVM_CONSTANT_InterfaceMethodref: { | |
| 2430 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2431 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2432 return classname->as_utf8(); |
| 2433 } | |
| 2434 default: | |
| 2435 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
| 2436 } | |
| 2437 ShouldNotReachHere(); | |
| 2438 return NULL; | |
| 2439 JVM_END | |
| 2440 | |
| 2441 | |
| 3938 | 2442 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
| 0 | 2443 JVMWrapper("JVM_GetCPFieldModifiers"); |
|
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|
2444 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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|
2445 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2446 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2447 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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|
2448 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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|
2449 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
| 0 | 2450 switch (cp->tag_at(cp_index).value()) { |
| 2451 case JVM_CONSTANT_Fieldref: { | |
|
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|
2452 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
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6990754: Use native memory and reference counting to implement SymbolTable
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|
2453 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 3938 | 2454 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
| 2455 if (fs.name() == name && fs.signature() == signature) { | |
| 2456 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 0 | 2457 } |
| 2458 } | |
| 2459 return -1; | |
| 2460 } | |
| 2461 default: | |
| 2462 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
| 2463 } | |
| 2464 ShouldNotReachHere(); | |
| 2465 return 0; | |
| 2466 JVM_END | |
| 2467 | |
| 2468 | |
| 2469 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
| 2470 JVMWrapper("JVM_GetCPMethodModifiers"); | |
|
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|
2471 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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|
2472 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2473 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2474 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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|
2475 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2476 switch (cp->tag_at(cp_index).value()) { |
| 2477 case JVM_CONSTANT_Methodref: | |
| 2478 case JVM_CONSTANT_InterfaceMethodref: { | |
|
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|
2479 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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|
2480 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
|
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|
2481 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
| 0 | 2482 int methods_count = methods->length(); |
| 2483 for (int i = 0; i < methods_count; i++) { | |
|
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|
2484 Method* method = methods->at(i); |
| 0 | 2485 if (method->name() == name && method->signature() == signature) { |
| 2486 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2487 } | |
| 2488 } | |
| 2489 return -1; | |
| 2490 } | |
| 2491 default: | |
| 2492 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
| 2493 } | |
| 2494 ShouldNotReachHere(); | |
| 2495 return 0; | |
| 2496 JVM_END | |
| 2497 | |
| 2498 | |
| 2499 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2500 | |
| 2501 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
| 2502 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
| 2503 JVM_END | |
| 2504 | |
| 2505 | |
| 2506 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
| 2507 JVMWrapper("JVM_IsSameClassPackage"); | |
| 2508 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
| 2509 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
|
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|
2510 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
|
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|
2511 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
| 0 | 2512 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
| 2513 JVM_END | |
| 2514 | |
| 2515 | |
| 2516 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
| 2517 | |
| 2518 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
| 2519 JVMWrapper2("JVM_Open (%s)", fname); | |
| 2520 | |
| 2521 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2522 int result = os::open(fname, flags, mode); |
| 0 | 2523 if (result >= 0) { |
| 2524 return result; | |
| 2525 } else { | |
| 2526 switch(errno) { | |
| 2527 case EEXIST: | |
| 2528 return JVM_EEXIST; | |
| 2529 default: | |
| 2530 return -1; | |
| 2531 } | |
| 2532 } | |
| 2533 JVM_END | |
| 2534 | |
| 2535 | |
| 2536 JVM_LEAF(jint, JVM_Close(jint fd)) | |
| 2537 JVMWrapper2("JVM_Close (0x%x)", fd); | |
| 2538 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2539 return os::close(fd); |
| 0 | 2540 JVM_END |
| 2541 | |
| 2542 | |
| 2543 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
| 2544 JVMWrapper2("JVM_Read (0x%x)", fd); | |
| 2545 | |
| 2546 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2547 return (jint)os::restartable_read(fd, buf, nbytes); |
| 0 | 2548 JVM_END |
| 2549 | |
| 2550 | |
| 2551 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
| 2552 JVMWrapper2("JVM_Write (0x%x)", fd); | |
| 2553 | |
| 2554 //%note jvm_r6 | |
|
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2555 return (jint)os::write(fd, buf, nbytes); |
| 0 | 2556 JVM_END |
| 2557 | |
| 2558 | |
| 2559 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
| 2560 JVMWrapper2("JVM_Available (0x%x)", fd); | |
| 2561 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2562 return os::available(fd, pbytes); |
| 0 | 2563 JVM_END |
| 2564 | |
| 2565 | |
| 2566 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
| 2567 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
| 2568 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2569 return os::lseek(fd, offset, whence); |
| 0 | 2570 JVM_END |
| 2571 | |
| 2572 | |
| 2573 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
| 2574 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2575 return os::ftruncate(fd, length); |
| 0 | 2576 JVM_END |
| 2577 | |
| 2578 | |
| 2579 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
| 2580 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
| 2581 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2582 return os::fsync(fd); |
| 0 | 2583 JVM_END |
| 2584 | |
| 2585 | |
| 2586 // Printing support ////////////////////////////////////////////////// | |
| 2587 extern "C" { | |
| 2588 | |
| 2589 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
| 2590 // see bug 4399518, 4417214 | |
| 2591 if ((intptr_t)count <= 0) return -1; | |
| 2592 return vsnprintf(str, count, fmt, args); | |
| 2593 } | |
| 2594 | |
| 2595 | |
| 2596 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
| 2597 va_list args; | |
| 2598 int len; | |
| 2599 va_start(args, fmt); | |
| 2600 len = jio_vsnprintf(str, count, fmt, args); | |
| 2601 va_end(args); | |
| 2602 return len; | |
| 2603 } | |
| 2604 | |
| 2605 | |
| 2606 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
| 2607 int len; | |
| 2608 va_list args; | |
| 2609 va_start(args, fmt); | |
| 2610 len = jio_vfprintf(f, fmt, args); | |
| 2611 va_end(args); | |
| 2612 return len; | |
| 2613 } | |
| 2614 | |
| 2615 | |
| 2616 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
| 2617 if (Arguments::vfprintf_hook() != NULL) { | |
| 2618 return Arguments::vfprintf_hook()(f, fmt, args); | |
| 2619 } else { | |
| 2620 return vfprintf(f, fmt, args); | |
| 2621 } | |
| 2622 } | |
| 2623 | |
| 2624 | |
| 2191 | 2625 JNIEXPORT int jio_printf(const char *fmt, ...) { |
| 0 | 2626 int len; |
| 2627 va_list args; | |
| 2628 va_start(args, fmt); | |
| 2629 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
| 2630 va_end(args); | |
| 2631 return len; | |
| 2632 } | |
| 2633 | |
| 2634 | |
| 2635 // HotSpot specific jio method | |
| 2636 void jio_print(const char* s) { | |
| 2637 // Try to make this function as atomic as possible. | |
| 2638 if (Arguments::vfprintf_hook() != NULL) { | |
| 2639 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
| 2640 } else { | |
|
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2641 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
|
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
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diff
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|
2642 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
| 0 | 2643 } |
| 2644 } | |
| 2645 | |
| 2646 } // Extern C | |
| 2647 | |
| 2648 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
| 2649 | |
| 2650 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
| 2651 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
| 2652 // OSThread objects. The exception to this rule is when the target object is the thread | |
| 2653 // doing the operation, in which case we know that the thread won't exit until the | |
| 2654 // operation is done (all exits being voluntary). There are a few cases where it is | |
| 2655 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
| 2656 // you are alive. While these can still happen, they are not subject to deadlocks if | |
| 2657 // the lock is held while the operation occurs (this is not the case for suspend, for | |
| 2658 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
| 2659 // implementation is local to this file, we always lock Threads_lock for that one. | |
| 2660 | |
| 2661 static void thread_entry(JavaThread* thread, TRAPS) { | |
| 2662 HandleMark hm(THREAD); | |
| 2663 Handle obj(THREAD, thread->threadObj()); | |
| 2664 JavaValue result(T_VOID); | |
| 2665 JavaCalls::call_virtual(&result, | |
| 2666 obj, | |
| 1142 | 2667 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
|
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|
2668 vmSymbols::run_method_name(), |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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|
2669 vmSymbols::void_method_signature(), |
| 0 | 2670 THREAD); |
| 2671 } | |
| 2672 | |
| 2673 | |
| 2674 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
| 2675 JVMWrapper("JVM_StartThread"); | |
| 2676 JavaThread *native_thread = NULL; | |
| 2677 | |
| 2678 // We cannot hold the Threads_lock when we throw an exception, | |
| 2679 // due to rank ordering issues. Example: we might need to grab the | |
| 2680 // Heap_lock while we construct the exception. | |
| 2681 bool throw_illegal_thread_state = false; | |
| 2682 | |
| 2683 // We must release the Threads_lock before we can post a jvmti event | |
| 2684 // in Thread::start. | |
| 2685 { | |
| 2686 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
| 2687 // we operate. | |
| 2688 MutexLocker mu(Threads_lock); | |
| 2689 | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
2690 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
2691 // re-starting an already started thread, so we should usually find |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
2692 // that the JavaThread is null. However for a JNI attached thread |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
2693 // there is a small window between the Thread object being created |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2694 // (with its JavaThread set) and the update to its threadStatus, so we |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2695 // have to check for this |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2696 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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|
2697 throw_illegal_thread_state = true; |
| 0 | 2698 } else { |
|
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diff
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|
2699 // We could also check the stillborn flag to see if this thread was already stopped, but |
|
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diff
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|
2700 // for historical reasons we let the thread detect that itself when it starts running |
|
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diff
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|
2701 |
| 0 | 2702 jlong size = |
| 2703 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
| 2704 // Allocate the C++ Thread structure and create the native thread. The | |
| 2705 // stack size retrieved from java is signed, but the constructor takes | |
| 2706 // size_t (an unsigned type), so avoid passing negative values which would | |
| 2707 // result in really large stacks. | |
| 2708 size_t sz = size > 0 ? (size_t) size : 0; | |
| 2709 native_thread = new JavaThread(&thread_entry, sz); | |
| 2710 | |
| 2711 // At this point it may be possible that no osthread was created for the | |
| 2712 // JavaThread due to lack of memory. Check for this situation and throw | |
| 2713 // an exception if necessary. Eventually we may want to change this so | |
| 2714 // that we only grab the lock if the thread was created successfully - | |
| 2715 // then we can also do this check and throw the exception in the | |
| 2716 // JavaThread constructor. | |
| 2717 if (native_thread->osthread() != NULL) { | |
| 2718 // Note: the current thread is not being used within "prepare". | |
| 2719 native_thread->prepare(jthread); | |
| 2720 } | |
| 2721 } | |
| 2722 } | |
| 2723 | |
| 2724 if (throw_illegal_thread_state) { | |
| 2725 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
| 2726 } | |
| 2727 | |
| 2728 assert(native_thread != NULL, "Starting null thread?"); | |
| 2729 | |
| 2730 if (native_thread->osthread() == NULL) { | |
| 2731 // No one should hold a reference to the 'native_thread'. | |
| 2732 delete native_thread; | |
| 2733 if (JvmtiExport::should_post_resource_exhausted()) { | |
| 2734 JvmtiExport::post_resource_exhausted( | |
| 2735 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
| 2736 "unable to create new native thread"); | |
| 2737 } | |
| 2738 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
| 2739 "unable to create new native thread"); | |
| 2740 } | |
| 2741 | |
| 2742 Thread::start(native_thread); | |
| 2743 | |
| 2744 JVM_END | |
| 2745 | |
| 2746 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
| 2747 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
| 2748 // but is thought to be reliable and simple. In the case, where the receiver is the | |
|
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diff
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|
2749 // same thread as the sender, no safepoint is needed. |
| 0 | 2750 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
| 2751 JVMWrapper("JVM_StopThread"); | |
| 2752 | |
| 2753 oop java_throwable = JNIHandles::resolve(throwable); | |
| 2754 if (java_throwable == NULL) { | |
| 2755 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 2756 } | |
| 2757 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2758 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
|
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
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4717
diff
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|
2759 Events::log_exception(JavaThread::current(), |
|
aa3d708d67c4
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parents:
4717
diff
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|
2760 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
|
aa3d708d67c4
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diff
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|
2761 receiver, (address)java_thread, throwable); |
|
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diff
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|
2762 // First check if thread is alive |
| 0 | 2763 if (receiver != NULL) { |
| 2764 // Check if exception is getting thrown at self (use oop equality, since the | |
| 2765 // target object might exit) | |
| 2766 if (java_thread == thread->threadObj()) { | |
| 2767 THROW_OOP(java_throwable); | |
| 2768 } else { | |
| 2769 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
| 2770 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
| 2771 } | |
| 2772 } | |
|
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diff
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|
2773 else { |
|
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diff
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|
2774 // Either: |
|
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diff
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|
2775 // - target thread has not been started before being stopped, or |
|
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diff
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|
2776 // - target thread already terminated |
|
ccfcb502af3f
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dholmes
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diff
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|
2777 // We could read the threadStatus to determine which case it is |
|
ccfcb502af3f
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dholmes
parents:
1980
diff
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|
2778 // but that is overkill as it doesn't matter. We must set the |
|
ccfcb502af3f
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dholmes
parents:
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diff
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|
2779 // stillborn flag for the first case, and if the thread has already |
|
ccfcb502af3f
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diff
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|
2780 // exited setting this flag has no affect |
|
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dholmes
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1980
diff
changeset
|
2781 java_lang_Thread::set_stillborn(java_thread); |
|
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diff
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|
2782 } |
| 0 | 2783 JVM_END |
| 2784 | |
| 2785 | |
| 2786 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
| 2787 JVMWrapper("JVM_IsThreadAlive"); | |
| 2788 | |
| 2789 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
| 2790 return java_lang_Thread::is_alive(thread_oop); | |
| 2791 JVM_END | |
| 2792 | |
| 2793 | |
| 2794 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
| 2795 JVMWrapper("JVM_SuspendThread"); | |
| 2796 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2797 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 2798 | |
| 2799 if (receiver != NULL) { | |
| 2800 // thread has run and has not exited (still on threads list) | |
| 2801 | |
| 2802 { | |
| 2803 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 2804 if (receiver->is_external_suspend()) { | |
| 2805 // Don't allow nested external suspend requests. We can't return | |
| 2806 // an error from this interface so just ignore the problem. | |
| 2807 return; | |
| 2808 } | |
| 2809 if (receiver->is_exiting()) { // thread is in the process of exiting | |
| 2810 return; | |
| 2811 } | |
| 2812 receiver->set_external_suspend(); | |
| 2813 } | |
| 2814 | |
| 2815 // java_suspend() will catch threads in the process of exiting | |
| 2816 // and will ignore them. | |
| 2817 receiver->java_suspend(); | |
| 2818 | |
| 2819 // It would be nice to have the following assertion in all the | |
| 2820 // time, but it is possible for a racing resume request to have | |
| 2821 // resumed this thread right after we suspended it. Temporarily | |
| 2822 // enable this assertion if you are chasing a different kind of | |
| 2823 // bug. | |
| 2824 // | |
| 2825 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
| 2826 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
| 2827 } | |
| 2828 JVM_END | |
| 2829 | |
| 2830 | |
| 2831 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
| 2832 JVMWrapper("JVM_ResumeThread"); | |
| 2833 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
| 2834 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
| 2835 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
| 2836 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
| 2837 // looks at it. | |
| 2838 MutexLocker ml(Threads_lock); | |
| 2839 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2840 if (thr != NULL) { | |
| 2841 // the thread has run and is not in the process of exiting | |
| 2842 thr->java_resume(); | |
| 2843 } | |
| 2844 JVM_END | |
| 2845 | |
| 2846 | |
| 2847 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
| 2848 JVMWrapper("JVM_SetThreadPriority"); | |
| 2849 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2850 MutexLocker ml(Threads_lock); | |
| 2851 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2852 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
| 2853 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 2854 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
| 2855 Thread::set_priority(thr, (ThreadPriority)prio); | |
| 2856 } | |
| 2857 JVM_END | |
| 2858 | |
| 2859 | |
| 2860 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
| 2861 JVMWrapper("JVM_Yield"); | |
| 2862 if (os::dont_yield()) return; | |
| 4006 | 2863 #ifndef USDT2 |
|
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1144
diff
changeset
|
2864 HS_DTRACE_PROBE0(hotspot, thread__yield); |
| 4006 | 2865 #else /* USDT2 */ |
| 2866 HOTSPOT_THREAD_YIELD(); | |
| 2867 #endif /* USDT2 */ | |
| 0 | 2868 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
| 2869 // Critical for similar threading behaviour | |
| 2870 if (ConvertYieldToSleep) { | |
| 2871 os::sleep(thread, MinSleepInterval, false); | |
| 2872 } else { | |
| 2873 os::yield(); | |
| 2874 } | |
| 2875 JVM_END | |
| 2876 | |
| 2877 | |
| 2878 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
| 2879 JVMWrapper("JVM_Sleep"); | |
| 2880 | |
| 2881 if (millis < 0) { | |
| 2882 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
| 2883 } | |
| 2884 | |
| 2885 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
| 2886 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 2887 } | |
| 2888 | |
| 2889 // Save current thread state and restore it at the end of this block. | |
| 2890 // And set new thread state to SLEEPING. | |
| 2891 JavaThreadSleepState jtss(thread); | |
| 2892 | |
| 4006 | 2893 #ifndef USDT2 |
|
1324
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fparain
parents:
1144
diff
changeset
|
2894 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
| 4006 | 2895 #else /* USDT2 */ |
| 2896 HOTSPOT_THREAD_SLEEP_BEGIN( | |
| 2897 millis); | |
| 2898 #endif /* USDT2 */ | |
|
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1144
diff
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|
2899 |
| 0 | 2900 if (millis == 0) { |
| 2901 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
| 2902 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
| 2903 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
| 2904 // for SOLARIS | |
| 2905 if (ConvertSleepToYield) { | |
| 2906 os::yield(); | |
| 2907 } else { | |
| 2908 ThreadState old_state = thread->osthread()->get_state(); | |
| 2909 thread->osthread()->set_state(SLEEPING); | |
| 2910 os::sleep(thread, MinSleepInterval, false); | |
| 2911 thread->osthread()->set_state(old_state); | |
| 2912 } | |
| 2913 } else { | |
| 2914 ThreadState old_state = thread->osthread()->get_state(); | |
| 2915 thread->osthread()->set_state(SLEEPING); | |
| 2916 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
| 2917 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
| 2918 // us while we were sleeping. We do not overwrite those. | |
| 2919 if (!HAS_PENDING_EXCEPTION) { | |
| 4006 | 2920 #ifndef USDT2 |
|
1324
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6935224: Adding new DTrace probes to work with Palantir
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1144
diff
changeset
|
2921 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
| 4006 | 2922 #else /* USDT2 */ |
| 2923 HOTSPOT_THREAD_SLEEP_END( | |
| 2924 1); | |
| 2925 #endif /* USDT2 */ | |
| 0 | 2926 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
| 2927 // to properly restore the thread state. That's likely wrong. | |
| 2928 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 2929 } | |
| 2930 } | |
| 2931 thread->osthread()->set_state(old_state); | |
| 2932 } | |
| 4006 | 2933 #ifndef USDT2 |
|
1324
e392695de029
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parents:
1144
diff
changeset
|
2934 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
| 4006 | 2935 #else /* USDT2 */ |
| 2936 HOTSPOT_THREAD_SLEEP_END( | |
| 2937 0); | |
| 2938 #endif /* USDT2 */ | |
| 0 | 2939 JVM_END |
| 2940 | |
| 2941 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
| 2942 JVMWrapper("JVM_CurrentThread"); | |
| 2943 oop jthread = thread->threadObj(); | |
| 2944 assert (thread != NULL, "no current thread!"); | |
| 2945 return JNIHandles::make_local(env, jthread); | |
| 2946 JVM_END | |
| 2947 | |
| 2948 | |
| 2949 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
| 2950 JVMWrapper("JVM_CountStackFrames"); | |
| 2951 | |
| 2952 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2953 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2954 bool throw_illegal_thread_state = false; | |
| 2955 int count = 0; | |
| 2956 | |
| 2957 { | |
| 2958 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 2959 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 2960 // acquire of the lock | |
| 2961 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2962 | |
| 2963 if (thr == NULL) { | |
| 2964 // do nothing | |
| 2965 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
| 2966 // Check whether this java thread has been suspended already. If not, throws | |
| 2967 // IllegalThreadStateException. We defer to throw that exception until | |
| 2968 // Threads_lock is released since loading exception class has to leave VM. | |
| 2969 // The correct way to test a thread is actually suspended is | |
| 2970 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
| 2971 // the Threads_lock. The above tests are sufficient for our purposes | |
| 2972 // provided the walkability of the stack is stable - which it isn't | |
| 2973 // 100% but close enough for most practical purposes. | |
| 2974 throw_illegal_thread_state = true; | |
| 2975 } else { | |
| 2976 // Count all java activation, i.e., number of vframes | |
| 2977 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
| 2978 // Native frames are not counted | |
| 2979 if (!vfst.method()->is_native()) count++; | |
| 2980 } | |
| 2981 } | |
| 2982 } | |
| 2983 | |
| 2984 if (throw_illegal_thread_state) { | |
| 2985 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
| 2986 "this thread is not suspended"); | |
| 2987 } | |
| 2988 return count; | |
| 2989 JVM_END | |
| 2990 | |
| 2991 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
| 2992 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
| 2993 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
| 2994 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
| 2995 // outside the critical section. Threads_lock is hot so we want to minimize | |
| 2996 // the hold-time. A cleaner interface would be to decompose interrupt into | |
| 2997 // two steps. The 1st phase, performed under Threads_lock, would return | |
| 2998 // a closure that'd be invoked after Threads_lock was dropped. | |
| 2999 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
| 3000 // admit spurious wakeups. | |
| 3001 | |
| 3002 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
| 3003 JVMWrapper("JVM_Interrupt"); | |
| 3004 | |
| 3005 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3006 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3007 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3008 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3009 // acquire of the lock | |
| 3010 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3011 if (thr != NULL) { | |
| 3012 Thread::interrupt(thr); | |
| 3013 } | |
| 3014 JVM_END | |
| 3015 | |
| 3016 | |
| 3017 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
| 3018 JVMWrapper("JVM_IsInterrupted"); | |
| 3019 | |
| 3020 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3021 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3022 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3023 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3024 // acquire of the lock | |
| 3025 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3026 if (thr == NULL) { | |
| 3027 return JNI_FALSE; | |
| 3028 } else { | |
| 3029 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
| 3030 } | |
| 3031 JVM_END | |
| 3032 | |
| 3033 | |
| 3034 // Return true iff the current thread has locked the object passed in | |
| 3035 | |
| 3036 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
| 3037 JVMWrapper("JVM_HoldsLock"); | |
| 3038 assert(THREAD->is_Java_thread(), "sanity check"); | |
| 3039 if (obj == NULL) { | |
| 3040 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 3041 } | |
| 3042 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
| 3043 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
| 3044 JVM_END | |
| 3045 | |
| 3046 | |
| 3047 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
| 3048 JVMWrapper("JVM_DumpAllStacks"); | |
| 3049 VM_PrintThreads op; | |
| 3050 VMThread::execute(&op); | |
| 3051 if (JvmtiExport::should_post_data_dump()) { | |
| 3052 JvmtiExport::post_data_dump(); | |
| 3053 } | |
| 3054 JVM_END | |
| 3055 | |
| 4006 | 3056 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
| 3057 JVMWrapper("JVM_SetNativeThreadName"); | |
| 3058 ResourceMark rm(THREAD); | |
| 3059 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3060 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3061 // Thread naming only supported for the current thread, doesn't work for | |
| 3062 // target threads. | |
| 3063 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
| 3064 // we don't set the name of an attached thread to avoid stepping | |
| 3065 // on other programs | |
| 3066 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3067 os::set_native_thread_name(thread_name); | |
| 3068 } | |
| 3069 JVM_END | |
| 0 | 3070 |
| 3071 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
| 3072 | |
| 3073 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
| 3074 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
| 3075 if (jthread->privileged_stack_top() == NULL) return false; | |
| 3076 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
| 3077 oop loader = jthread->privileged_stack_top()->class_loader(); | |
| 3078 if (loader == NULL) return true; | |
| 3079 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 3080 if (trusted) return true; | |
| 3081 } | |
| 3082 return false; | |
| 3083 } | |
| 3084 | |
| 3085 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
| 3086 JVMWrapper("JVM_CurrentLoadedClass"); | |
| 3087 ResourceMark rm(THREAD); | |
| 3088 | |
| 3089 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3090 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3091 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3092 if (trusted) return NULL; | |
| 3093 | |
|
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3094 Method* m = vfst.method(); |
| 0 | 3095 if (!m->is_native()) { |
|
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|
3096 InstanceKlass* holder = m->method_holder(); |
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3097 oop loader = holder->class_loader(); |
| 0 | 3098 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
|
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|
3099 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
| 0 | 3100 } |
| 3101 } | |
| 3102 } | |
| 3103 return NULL; | |
| 3104 JVM_END | |
| 3105 | |
| 3106 | |
| 3107 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
| 3108 JVMWrapper("JVM_CurrentClassLoader"); | |
| 3109 ResourceMark rm(THREAD); | |
| 3110 | |
| 3111 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3112 | |
| 3113 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3114 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3115 if (trusted) return NULL; | |
| 3116 | |
|
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3117 Method* m = vfst.method(); |
| 0 | 3118 if (!m->is_native()) { |
|
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|
3119 InstanceKlass* holder = m->method_holder(); |
| 0 | 3120 assert(holder->is_klass(), "just checking"); |
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3121 oop loader = holder->class_loader(); |
| 0 | 3122 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3123 return JNIHandles::make_local(env, loader); | |
| 3124 } | |
| 3125 } | |
| 3126 } | |
| 3127 return NULL; | |
| 3128 JVM_END | |
| 3129 | |
| 3130 | |
| 3131 // Utility object for collecting method holders walking down the stack | |
| 3132 class KlassLink: public ResourceObj { | |
| 3133 public: | |
| 3134 KlassHandle klass; | |
| 3135 KlassLink* next; | |
| 3136 | |
| 3137 KlassLink(KlassHandle k) { klass = k; next = NULL; } | |
| 3138 }; | |
| 3139 | |
| 3140 | |
| 3141 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
| 3142 JVMWrapper("JVM_GetClassContext"); | |
| 3143 ResourceMark rm(THREAD); | |
| 3144 JvmtiVMObjectAllocEventCollector oam; | |
| 3145 // Collect linked list of (handles to) method holders | |
| 3146 KlassLink* first = NULL; | |
| 3147 KlassLink* last = NULL; | |
| 3148 int depth = 0; | |
| 3149 | |
| 3150 for(vframeStream vfst(thread); !vfst.at_end(); vfst.security_get_caller_frame(1)) { | |
| 3151 // Native frames are not returned | |
| 3152 if (!vfst.method()->is_native()) { | |
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3153 Klass* holder = vfst.method()->method_holder(); |
| 0 | 3154 assert(holder->is_klass(), "just checking"); |
| 3155 depth++; | |
| 3156 KlassLink* l = new KlassLink(KlassHandle(thread, holder)); | |
| 3157 if (first == NULL) { | |
| 3158 first = last = l; | |
| 3159 } else { | |
| 3160 last->next = l; | |
| 3161 last = l; | |
| 3162 } | |
| 3163 } | |
| 3164 } | |
| 3165 | |
| 3166 // Create result array of type [Ljava/lang/Class; | |
| 1142 | 3167 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), depth, CHECK_NULL); |
| 0 | 3168 // Fill in mirrors corresponding to method holders |
| 3169 int index = 0; | |
| 3170 while (first != NULL) { | |
| 6983 | 3171 result->obj_at_put(index++, first->klass()->java_mirror()); |
| 0 | 3172 first = first->next; |
| 3173 } | |
| 3174 assert(index == depth, "just checking"); | |
| 3175 | |
| 3176 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 3177 JVM_END | |
| 3178 | |
| 3179 | |
| 3180 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
| 3181 JVMWrapper("JVM_ClassDepth"); | |
| 3182 ResourceMark rm(THREAD); | |
| 3183 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 3184 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
| 3185 | |
| 3186 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
|
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3187 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
|
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3188 if (class_name_sym == NULL) { |
| 0 | 3189 return -1; |
| 3190 } | |
| 3191 | |
| 3192 int depth = 0; | |
| 3193 | |
| 3194 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3195 if (!vfst.method()->is_native()) { | |
|
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3196 InstanceKlass* holder = vfst.method()->method_holder(); |
| 0 | 3197 assert(holder->is_klass(), "just checking"); |
|
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3198 if (holder->name() == class_name_sym) { |
| 0 | 3199 return depth; |
| 3200 } | |
| 3201 depth++; | |
| 3202 } | |
| 3203 } | |
| 3204 return -1; | |
| 3205 JVM_END | |
| 3206 | |
| 3207 | |
| 3208 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
| 3209 JVMWrapper("JVM_ClassLoaderDepth"); | |
| 3210 ResourceMark rm(THREAD); | |
| 3211 int depth = 0; | |
| 3212 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3213 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
| 3214 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3215 if (trusted) return -1; | |
| 3216 | |
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3217 Method* m = vfst.method(); |
| 0 | 3218 if (!m->is_native()) { |
|
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3219 InstanceKlass* holder = m->method_holder(); |
| 0 | 3220 assert(holder->is_klass(), "just checking"); |
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3221 oop loader = holder->class_loader(); |
| 0 | 3222 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3223 return depth; | |
| 3224 } | |
| 3225 depth++; | |
| 3226 } | |
| 3227 } | |
| 3228 return -1; | |
| 3229 JVM_END | |
| 3230 | |
| 3231 | |
| 3232 // java.lang.Package //////////////////////////////////////////////////////////////// | |
| 3233 | |
| 3234 | |
| 3235 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
| 3236 JVMWrapper("JVM_GetSystemPackage"); | |
| 3237 ResourceMark rm(THREAD); | |
| 3238 JvmtiVMObjectAllocEventCollector oam; | |
| 3239 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3240 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
| 3241 return (jstring) JNIHandles::make_local(result); | |
| 3242 JVM_END | |
| 3243 | |
| 3244 | |
| 3245 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
| 3246 JVMWrapper("JVM_GetSystemPackages"); | |
| 3247 JvmtiVMObjectAllocEventCollector oam; | |
| 3248 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
| 3249 return (jobjectArray) JNIHandles::make_local(result); | |
| 3250 JVM_END | |
| 3251 | |
| 3252 | |
| 3253 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
| 3254 | |
|
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3255 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
| 0 | 3256 if (current_class == NULL) { |
| 3257 return true; | |
| 3258 } | |
| 3259 if ((current_class == field_class) || access.is_public()) { | |
| 3260 return true; | |
| 3261 } | |
| 3262 | |
| 3263 if (access.is_protected()) { | |
| 3264 // See if current_class is a subclass of field_class | |
| 6983 | 3265 if (current_class->is_subclass_of(field_class)) { |
| 0 | 3266 return true; |
| 3267 } | |
| 3268 } | |
| 3269 | |
|
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3270 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
| 0 | 3271 } |
| 3272 | |
| 3273 | |
| 3274 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
| 3275 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
| 3276 JVMWrapper("JVM_AllocateNewObject"); | |
| 3277 JvmtiVMObjectAllocEventCollector oam; | |
| 3278 // Receiver is not used | |
| 3279 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
| 3280 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
| 3281 | |
| 3282 // Cannot instantiate primitive types | |
| 3283 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
| 3284 ResourceMark rm(THREAD); | |
| 3285 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3286 } | |
| 3287 | |
| 3288 // Arrays not allowed here, must use JVM_AllocateNewArray | |
| 6983 | 3289 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
| 3290 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
| 0 | 3291 ResourceMark rm(THREAD); |
| 3292 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3293 } | |
| 3294 | |
|
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|
3295 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
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|
3296 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
| 0 | 3297 |
| 3298 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
| 3299 | |
| 3300 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
| 3301 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 3302 | |
| 3303 // Make sure klass is initialized, since we are about to instantiate one of them. | |
| 3304 curr_klass->initialize(CHECK_NULL); | |
| 3305 | |
| 3306 methodHandle m (THREAD, | |
| 3307 init_klass->find_method(vmSymbols::object_initializer_name(), | |
| 3308 vmSymbols::void_method_signature())); | |
| 3309 if (m.is_null()) { | |
| 3310 ResourceMark rm(THREAD); | |
| 3311 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 6983 | 3312 Method::name_and_sig_as_C_string(init_klass(), |
| 0 | 3313 vmSymbols::object_initializer_name(), |
| 3314 vmSymbols::void_method_signature())); | |
| 3315 } | |
| 3316 | |
| 3317 if (curr_klass == init_klass && !m->is_public()) { | |
| 3318 // Calling the constructor for class 'curr_klass'. | |
| 3319 // Only allow calls to a public no-arg constructor. | |
| 3320 // This path corresponds to creating an Externalizable object. | |
| 3321 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3322 } | |
| 3323 | |
| 3324 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
| 3325 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
| 3326 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3327 } | |
| 3328 | |
| 3329 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
| 3330 // Call constructor m. This might call a constructor higher up in the hierachy | |
| 3331 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
| 3332 | |
| 3333 return JNIHandles::make_local(obj()); | |
| 3334 JVM_END | |
| 3335 | |
| 3336 | |
| 3337 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
| 3338 JVMWrapper("JVM_AllocateNewArray"); | |
| 3339 JvmtiVMObjectAllocEventCollector oam; | |
| 3340 oop mirror = JNIHandles::resolve_non_null(currClass); | |
| 3341 | |
| 3342 if (java_lang_Class::is_primitive(mirror)) { | |
| 3343 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3344 } | |
|
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|
3345 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 3346 oop result; |
| 3347 | |
|
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|
3348 if (k->oop_is_typeArray()) { |
| 0 | 3349 // typeArray |
|
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|
3350 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
|
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|
3351 } else if (k->oop_is_objArray()) { |
| 0 | 3352 // objArray |
|
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|
3353 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
| 0 | 3354 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
| 3355 result = oak->allocate(length, CHECK_NULL); | |
| 3356 } else { | |
| 3357 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3358 } | |
| 3359 return JNIHandles::make_local(env, result); | |
| 3360 JVM_END | |
| 3361 | |
| 3362 | |
| 3363 // Return the first non-null class loader up the execution stack, or null | |
| 3364 // if only code from the null class loader is on the stack. | |
| 3365 | |
| 3366 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
| 3367 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3368 // UseNewReflection | |
| 3369 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
|
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|
3370 oop loader = vfst.method()->method_holder()->class_loader(); |
| 0 | 3371 if (loader != NULL) { |
| 3372 return JNIHandles::make_local(env, loader); | |
| 3373 } | |
| 3374 } | |
| 3375 return NULL; | |
| 3376 JVM_END | |
| 3377 | |
| 3378 | |
| 3379 // Load a class relative to the most recent class on the stack with a non-null | |
| 3380 // classloader. | |
| 3381 // This function has been deprecated and should not be considered part of the | |
| 3382 // specified JVM interface. | |
| 3383 | |
| 3384 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
| 3385 jclass currClass, jstring currClassName)) | |
| 3386 JVMWrapper("JVM_LoadClass0"); | |
| 3387 // Receiver is not used | |
| 3388 ResourceMark rm(THREAD); | |
| 3389 | |
| 3390 // Class name argument is not guaranteed to be in internal format | |
| 3391 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
| 3392 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
| 3393 | |
| 3394 const char* str = java_lang_String::as_utf8_string(string()); | |
| 3395 | |
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3396 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
| 0 | 3397 // It's impossible to create this class; the name cannot fit |
| 3398 // into the constant pool. | |
| 3399 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
| 3400 } | |
| 3401 | |
|
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3402 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
| 0 | 3403 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
| 3404 // Find the most recent class on the stack with a non-null classloader | |
| 3405 oop loader = NULL; | |
| 3406 oop protection_domain = NULL; | |
| 3407 if (curr_klass.is_null()) { | |
| 3408 for (vframeStream vfst(thread); | |
| 3409 !vfst.at_end() && loader == NULL; | |
| 3410 vfst.next()) { | |
| 3411 if (!vfst.method()->is_native()) { | |
|
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|
3412 InstanceKlass* holder = vfst.method()->method_holder(); |
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3413 loader = holder->class_loader(); |
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|
3414 protection_domain = holder->protection_domain(); |
| 0 | 3415 } |
| 3416 } | |
| 3417 } else { | |
|
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3418 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
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3419 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
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3420 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
| 0 | 3421 } |
| 3422 Handle h_loader(THREAD, loader); | |
| 3423 Handle h_prot (THREAD, protection_domain); | |
|
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3424 jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot, |
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|
3425 false, thread); |
|
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|
3426 if (TraceClassResolution && result != NULL) { |
|
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|
3427 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
|
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|
3428 } |
|
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|
3429 return result; |
| 0 | 3430 JVM_END |
| 3431 | |
| 3432 | |
| 3433 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
| 3434 | |
| 3435 | |
| 3436 // resolve array handle and check arguments | |
| 3437 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
| 3438 if (arr == NULL) { | |
| 3439 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 3440 } | |
| 3441 oop a = JNIHandles::resolve_non_null(arr); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3442 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
| 0 | 3443 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
| 3444 } | |
| 3445 return arrayOop(a); | |
| 3446 } | |
| 3447 | |
| 3448 | |
| 3449 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
| 3450 JVMWrapper("JVM_GetArrayLength"); | |
| 3451 arrayOop a = check_array(env, arr, false, CHECK_0); | |
| 3452 return a->length(); | |
| 3453 JVM_END | |
| 3454 | |
| 3455 | |
| 3456 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
| 3457 JVMWrapper("JVM_Array_Get"); | |
| 3458 JvmtiVMObjectAllocEventCollector oam; | |
| 3459 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
| 3460 jvalue value; | |
| 3461 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
| 3462 oop box = Reflection::box(&value, type, CHECK_NULL); | |
| 3463 return JNIHandles::make_local(env, box); | |
| 3464 JVM_END | |
| 3465 | |
| 3466 | |
| 3467 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
| 3468 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
| 3469 jvalue value; | |
| 3470 value.i = 0; // to initialize value before getting used in CHECK | |
| 3471 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
| 3472 assert(a->is_typeArray(), "just checking"); | |
| 3473 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
| 3474 BasicType wide_type = (BasicType) wCode; | |
| 3475 if (type != wide_type) { | |
| 3476 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
| 3477 } | |
| 3478 return value; | |
| 3479 JVM_END | |
| 3480 | |
| 3481 | |
| 3482 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
| 3483 JVMWrapper("JVM_SetArrayElement"); | |
| 3484 arrayOop a = check_array(env, arr, false, CHECK); | |
| 3485 oop box = JNIHandles::resolve(val); | |
| 3486 jvalue value; | |
| 3487 value.i = 0; // to initialize value before getting used in CHECK | |
| 3488 BasicType value_type; | |
| 3489 if (a->is_objArray()) { | |
| 3490 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
| 3491 value_type = Reflection::unbox_for_regular_object(box, &value); | |
| 3492 } else { | |
| 3493 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
| 3494 } | |
| 3495 Reflection::array_set(&value, a, index, value_type, CHECK); | |
| 3496 JVM_END | |
| 3497 | |
| 3498 | |
| 3499 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
| 3500 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
| 3501 arrayOop a = check_array(env, arr, true, CHECK); | |
| 3502 assert(a->is_typeArray(), "just checking"); | |
| 3503 BasicType value_type = (BasicType) vCode; | |
| 3504 Reflection::array_set(&v, a, index, value_type, CHECK); | |
| 3505 JVM_END | |
| 3506 | |
| 3507 | |
| 3508 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
| 3509 JVMWrapper("JVM_NewArray"); | |
| 3510 JvmtiVMObjectAllocEventCollector oam; | |
| 3511 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3512 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
| 3513 return JNIHandles::make_local(env, result); | |
| 3514 JVM_END | |
| 3515 | |
| 3516 | |
| 3517 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
| 3518 JVMWrapper("JVM_NewMultiArray"); | |
| 3519 JvmtiVMObjectAllocEventCollector oam; | |
| 3520 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
| 3521 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3522 assert(dim_array->is_typeArray(), "just checking"); | |
| 3523 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
| 3524 return JNIHandles::make_local(env, result); | |
| 3525 JVM_END | |
| 3526 | |
| 3527 | |
| 3528 // Networking library support //////////////////////////////////////////////////////////////////// | |
| 3529 | |
| 3530 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
| 3531 JVMWrapper("JVM_InitializeSocketLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3532 return 0; |
| 0 | 3533 JVM_END |
| 3534 | |
| 3535 | |
| 3536 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
| 3537 JVMWrapper("JVM_Socket"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3538 return os::socket(domain, type, protocol); |
| 0 | 3539 JVM_END |
| 3540 | |
| 3541 | |
| 3542 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
| 3543 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
| 3544 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3545 return os::socket_close(fd); |
| 0 | 3546 JVM_END |
| 3547 | |
| 3548 | |
| 3549 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
| 3550 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
| 3551 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3552 return os::socket_shutdown(fd, howto); |
| 0 | 3553 JVM_END |
| 3554 | |
| 3555 | |
| 3556 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3557 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
| 3558 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3559 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3560 JVM_END |
| 3561 | |
| 3562 | |
| 3563 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3564 JVMWrapper2("JVM_Send (0x%x)", fd); | |
| 3565 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3566 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3567 JVM_END |
| 3568 | |
| 3569 | |
| 3570 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
| 3571 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
| 3572 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3573 return os::timeout(fd, timeout); |
| 0 | 3574 JVM_END |
| 3575 | |
| 3576 | |
| 3577 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
| 3578 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
| 3579 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3580 return os::listen(fd, count); |
| 0 | 3581 JVM_END |
| 3582 | |
| 3583 | |
| 3584 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
| 3585 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
| 3586 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3587 return os::connect(fd, him, (socklen_t)len); |
| 0 | 3588 JVM_END |
| 3589 | |
| 3590 | |
| 3591 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
| 3592 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
| 3593 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3594 return os::bind(fd, him, (socklen_t)len); |
| 0 | 3595 JVM_END |
| 3596 | |
| 3597 | |
| 3598 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
| 3599 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
| 3600 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3601 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3602 jint result = os::accept(fd, him, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3603 *len = (jint)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3604 return result; |
| 0 | 3605 JVM_END |
| 3606 | |
| 3607 | |
| 3608 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
| 3609 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
| 3610 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3611 socklen_t socklen = (socklen_t)(*fromlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3612 jint result = os::recvfrom(fd, buf, (size_t)nBytes, (uint)flags, from, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3613 *fromlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3614 return result; |
| 0 | 3615 JVM_END |
| 3616 | |
| 3617 | |
| 3618 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
| 3619 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
| 3620 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3621 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3622 jint result = os::get_sock_name(fd, him, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3623 *len = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3624 return result; |
| 0 | 3625 JVM_END |
| 3626 | |
| 3627 | |
| 3628 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
| 3629 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
| 3630 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3631 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
| 0 | 3632 JVM_END |
| 3633 | |
| 3634 | |
| 3635 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
| 3636 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
| 3637 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3638 return os::socket_available(fd, pbytes); |
| 0 | 3639 JVM_END |
| 3640 | |
| 3641 | |
| 3642 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
| 3643 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3644 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3645 socklen_t socklen = (socklen_t)(*optlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3646 jint result = os::get_sock_opt(fd, level, optname, optval, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3647 *optlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3648 return result; |
| 0 | 3649 JVM_END |
| 3650 | |
| 3651 | |
| 3652 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
| 3653 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3654 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3655 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
| 0 | 3656 JVM_END |
| 3657 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3658 |
| 0 | 3659 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
| 3660 JVMWrapper("JVM_GetHostName"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3661 return os::get_host_name(name, namelen); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3662 JVM_END |
| 0 | 3663 |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3664 |
| 0 | 3665 // Library support /////////////////////////////////////////////////////////////////////////// |
| 3666 | |
| 3667 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
| 3668 //%note jvm_ct | |
| 3669 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
| 3670 char ebuf[1024]; | |
| 3671 void *load_result; | |
| 3672 { | |
| 3673 ThreadToNativeFromVM ttnfvm(thread); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3674 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
| 0 | 3675 } |
| 3676 if (load_result == NULL) { | |
| 3677 char msg[1024]; | |
| 3678 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
| 3679 // Since 'ebuf' may contain a string encoded using | |
| 3680 // platform encoding scheme, we need to pass | |
| 3681 // Exceptions::unsafe_to_utf8 to the new_exception method | |
| 3682 // as the last argument. See bug 6367357. | |
| 3683 Handle h_exception = | |
| 3684 Exceptions::new_exception(thread, | |
| 3685 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
| 3686 msg, Exceptions::unsafe_to_utf8); | |
| 3687 | |
| 3688 THROW_HANDLE_0(h_exception); | |
| 3689 } | |
| 3690 return load_result; | |
| 3691 JVM_END | |
| 3692 | |
| 3693 | |
| 3694 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
| 3695 JVMWrapper("JVM_UnloadLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3696 os::dll_unload(handle); |
| 0 | 3697 JVM_END |
| 3698 | |
| 3699 | |
| 3700 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
| 3701 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3702 return os::dll_lookup(handle, name); |
| 0 | 3703 JVM_END |
| 3704 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3705 |
| 0 | 3706 // Floating point support //////////////////////////////////////////////////////////////////// |
| 3707 | |
| 3708 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
| 3709 JVMWrapper("JVM_IsNaN"); | |
| 3710 return g_isnan(a); | |
| 3711 JVM_END | |
| 3712 | |
| 3713 | |
| 3714 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
| 3715 | |
| 3716 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
| 3717 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
| 3718 return Threads::is_supported_jni_version_including_1_1(version); | |
| 3719 JVM_END | |
| 3720 | |
| 3721 | |
| 3722 // String support /////////////////////////////////////////////////////////////////////////// | |
| 3723 | |
| 3724 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
| 3725 JVMWrapper("JVM_InternString"); | |
| 3726 JvmtiVMObjectAllocEventCollector oam; | |
| 3727 if (str == NULL) return NULL; | |
| 3728 oop string = JNIHandles::resolve_non_null(str); | |
| 3729 oop result = StringTable::intern(string, CHECK_NULL); | |
| 3730 return (jstring) JNIHandles::make_local(env, result); | |
| 3731 JVM_END | |
| 3732 | |
| 3733 | |
| 3734 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
| 3735 | |
| 3736 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
| 3737 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
| 3738 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
| 3739 // that only works with java threads. | |
| 3740 | |
| 3741 | |
| 3742 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
| 3743 VM_Exit::block_if_vm_exited(); | |
| 3744 JVMWrapper("JVM_RawMonitorCreate"); | |
| 3745 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
| 3746 } | |
| 3747 | |
| 3748 | |
| 3749 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
| 3750 VM_Exit::block_if_vm_exited(); | |
| 3751 JVMWrapper("JVM_RawMonitorDestroy"); | |
| 3752 delete ((Mutex*) mon); | |
| 3753 } | |
| 3754 | |
| 3755 | |
| 3756 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
| 3757 VM_Exit::block_if_vm_exited(); | |
| 3758 JVMWrapper("JVM_RawMonitorEnter"); | |
| 3759 ((Mutex*) mon)->jvm_raw_lock(); | |
| 3760 return 0; | |
| 3761 } | |
| 3762 | |
| 3763 | |
| 3764 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
| 3765 VM_Exit::block_if_vm_exited(); | |
| 3766 JVMWrapper("JVM_RawMonitorExit"); | |
| 3767 ((Mutex*) mon)->jvm_raw_unlock(); | |
| 3768 } | |
| 3769 | |
| 3770 | |
| 3771 // Support for Serialization | |
| 3772 | |
| 3773 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
| 3774 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
| 3775 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
| 3776 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
| 3777 | |
| 3778 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
| 3779 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
| 3780 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
| 3781 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
| 3782 | |
| 3783 | |
| 3784 void initialize_converter_functions() { | |
| 3785 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 3786 // These functions only exist for compatibility with 1.3.1 and earlier | |
| 3787 return; | |
| 3788 } | |
| 3789 | |
| 3790 // called from universe_post_init() | |
| 3791 assert( | |
| 3792 int_bits_to_float_fn == NULL && | |
| 3793 long_bits_to_double_fn == NULL && | |
| 3794 float_to_int_bits_fn == NULL && | |
| 3795 double_to_long_bits_fn == NULL , | |
| 3796 "initialization done twice" | |
| 3797 ); | |
| 3798 // initialize | |
| 3799 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
| 3800 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
| 3801 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
| 3802 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
| 3803 // verify | |
| 3804 assert( | |
| 3805 int_bits_to_float_fn != NULL && | |
| 3806 long_bits_to_double_fn != NULL && | |
| 3807 float_to_int_bits_fn != NULL && | |
| 3808 double_to_long_bits_fn != NULL , | |
| 3809 "initialization failed" | |
| 3810 ); | |
| 3811 } | |
| 3812 | |
| 3813 | |
| 3814 // Serialization | |
| 3815 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 3816 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 3817 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 3818 | |
| 3819 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 3820 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 3821 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 3822 oop o = JNIHandles::resolve(obj); | |
| 3823 | |
| 3824 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 3825 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3826 } | |
| 3827 | |
| 3828 jsize nfids = fids->length(); | |
| 3829 if (nfids == 0) return; | |
| 3830 | |
| 3831 if (tcodes->length() < nfids) { | |
| 3832 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 3833 } | |
| 3834 | |
| 3835 jsize off = 0; | |
| 3836 /* loop through fields, setting values */ | |
| 3837 for (jsize i = 0; i < nfids; i++) { | |
| 3838 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 3839 int field_offset; | |
| 3840 if (fid != NULL) { | |
| 3841 // NULL is a legal value for fid, but retrieving the field offset | |
| 3842 // trigger assertion in that case | |
| 3843 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 3844 } | |
| 3845 | |
| 3846 switch (tcodes->char_at(i)) { | |
| 3847 case 'Z': | |
| 3848 if (fid != NULL) { | |
| 3849 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
| 3850 o->bool_field_put(field_offset, val); | |
| 3851 } | |
| 3852 off++; | |
| 3853 break; | |
| 3854 | |
| 3855 case 'B': | |
| 3856 if (fid != NULL) { | |
| 3857 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
| 3858 } | |
| 3859 off++; | |
| 3860 break; | |
| 3861 | |
| 3862 case 'C': | |
| 3863 if (fid != NULL) { | |
| 3864 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 3865 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 3866 o->char_field_put(field_offset, val); | |
| 3867 } | |
| 3868 off += 2; | |
| 3869 break; | |
| 3870 | |
| 3871 case 'S': | |
| 3872 if (fid != NULL) { | |
| 3873 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 3874 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 3875 o->short_field_put(field_offset, val); | |
| 3876 } | |
| 3877 off += 2; | |
| 3878 break; | |
| 3879 | |
| 3880 case 'I': | |
| 3881 if (fid != NULL) { | |
| 3882 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 3883 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 3884 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 3885 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 3886 o->int_field_put(field_offset, ival); | |
| 3887 } | |
| 3888 off += 4; | |
| 3889 break; | |
| 3890 | |
| 3891 case 'F': | |
| 3892 if (fid != NULL) { | |
| 3893 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 3894 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 3895 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 3896 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 3897 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
| 3898 o->float_field_put(field_offset, fval); | |
| 3899 } | |
| 3900 off += 4; | |
| 3901 break; | |
| 3902 | |
| 3903 case 'J': | |
| 3904 if (fid != NULL) { | |
| 3905 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 3906 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 3907 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 3908 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 3909 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 3910 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 3911 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 3912 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 3913 o->long_field_put(field_offset, lval); | |
| 3914 } | |
| 3915 off += 8; | |
| 3916 break; | |
| 3917 | |
| 3918 case 'D': | |
| 3919 if (fid != NULL) { | |
| 3920 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 3921 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 3922 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 3923 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 3924 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 3925 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 3926 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 3927 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 3928 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
| 3929 o->double_field_put(field_offset, dval); | |
| 3930 } | |
| 3931 off += 8; | |
| 3932 break; | |
| 3933 | |
| 3934 default: | |
| 3935 // Illegal typecode | |
| 3936 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 3937 } | |
| 3938 } | |
| 3939 JVM_END | |
| 3940 | |
| 3941 | |
| 3942 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 3943 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 3944 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 3945 | |
| 3946 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 3947 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 3948 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 3949 oop o = JNIHandles::resolve(obj); | |
| 3950 | |
| 3951 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 3952 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3953 } | |
| 3954 | |
| 3955 jsize nfids = fids->length(); | |
| 3956 if (nfids == 0) return; | |
| 3957 | |
| 3958 if (tcodes->length() < nfids) { | |
| 3959 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 3960 } | |
| 3961 | |
| 3962 /* loop through fields, fetching values */ | |
| 3963 jsize off = 0; | |
| 3964 for (jsize i = 0; i < nfids; i++) { | |
| 3965 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 3966 if (fid == NULL) { | |
| 3967 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3968 } | |
| 3969 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 3970 | |
| 3971 switch (tcodes->char_at(i)) { | |
| 3972 case 'Z': | |
| 3973 { | |
| 3974 jboolean val = o->bool_field(field_offset); | |
| 3975 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
| 3976 } | |
| 3977 break; | |
| 3978 | |
| 3979 case 'B': | |
| 3980 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
| 3981 break; | |
| 3982 | |
| 3983 case 'C': | |
| 3984 { | |
| 3985 jchar val = o->char_field(field_offset); | |
| 3986 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3987 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3988 } | |
| 3989 break; | |
| 3990 | |
| 3991 case 'S': | |
| 3992 { | |
| 3993 jshort val = o->short_field(field_offset); | |
| 3994 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3995 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3996 } | |
| 3997 break; | |
| 3998 | |
| 3999 case 'I': | |
| 4000 { | |
| 4001 jint val = o->int_field(field_offset); | |
| 4002 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 4003 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 4004 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 4005 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 4006 } | |
| 4007 break; | |
| 4008 | |
| 4009 case 'F': | |
| 4010 { | |
| 4011 jfloat fval = o->float_field(field_offset); | |
| 4012 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
| 4013 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
| 4014 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
| 4015 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
| 4016 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
| 4017 } | |
| 4018 break; | |
| 4019 | |
| 4020 case 'J': | |
| 4021 { | |
| 4022 jlong val = o->long_field(field_offset); | |
| 4023 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
| 4024 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
| 4025 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
| 4026 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
| 4027 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 4028 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 4029 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 4030 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 4031 } | |
| 4032 break; | |
| 4033 | |
| 4034 case 'D': | |
| 4035 { | |
| 4036 jdouble dval = o->double_field(field_offset); | |
| 4037 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
| 4038 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
| 4039 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
| 4040 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
| 4041 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
| 4042 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
| 4043 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
| 4044 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
| 4045 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
| 4046 } | |
| 4047 break; | |
| 4048 | |
| 4049 default: | |
| 4050 // Illegal typecode | |
| 4051 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 4052 } | |
| 4053 } | |
| 4054 JVM_END | |
| 4055 | |
| 4056 | |
| 4057 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
| 4058 | |
|
2177
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2162
diff
changeset
|
4059 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
| 0 | 4060 // Security Note: |
| 4061 // The Java level wrapper will perform the necessary security check allowing | |
| 4062 // us to pass the NULL as the initiating class loader. | |
|
6725
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diff
changeset
|
4063 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
|
878
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
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875
diff
changeset
|
4064 |
| 0 | 4065 KlassHandle klass_handle(THREAD, klass); |
| 4066 // Check if we should initialize the class | |
| 4067 if (init && klass_handle->oop_is_instance()) { | |
| 4068 klass_handle->initialize(CHECK_NULL); | |
| 4069 } | |
| 4070 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
| 4071 } | |
| 4072 | |
| 4073 | |
| 4074 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
| 4075 | |
| 4076 #ifndef PRODUCT | |
| 4077 | |
| 4078 extern "C" { | |
| 4079 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
| 4080 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
| 4081 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
| 4082 } | |
| 4083 | |
| 4084 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
| 4085 JVMWrapper("JVM_AccessBoolVMFlag"); | |
| 4086 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); | |
| 4087 JVM_END | |
| 4088 | |
| 4089 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
| 4090 JVMWrapper("JVM_AccessVMIntFlag"); | |
| 4091 intx v; | |
| 4092 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); | |
| 4093 *value = (jint)v; | |
| 4094 return result; | |
| 4095 JVM_END | |
| 4096 | |
| 4097 | |
| 4098 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
| 4099 JVMWrapper("JVM_VMBreakPoint"); | |
| 4100 oop the_obj = JNIHandles::resolve(obj); | |
| 4101 BREAKPOINT; | |
| 4102 JVM_END | |
| 4103 | |
| 4104 | |
| 4105 #endif | |
| 4106 | |
| 4107 | |
| 4108 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4109 | |
| 4110 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
| 4111 JVMWrapper("JVM_InvokeMethod"); | |
| 4112 Handle method_handle; | |
| 4113 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
| 4114 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
| 4115 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
| 4116 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4117 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
| 4118 jobject res = JNIHandles::make_local(env, result); | |
| 4119 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4120 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
| 4121 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
| 4122 if (java_lang_Class::is_primitive(ret_type)) { | |
| 4123 // Only for primitive type vm allocates memory for java object. | |
| 4124 // See box() method. | |
| 4125 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4126 } | |
| 4127 } | |
| 4128 return res; | |
| 4129 } else { | |
| 4130 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
| 4131 } | |
| 4132 JVM_END | |
| 4133 | |
| 4134 | |
| 4135 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
| 4136 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
| 4137 oop constructor_mirror = JNIHandles::resolve(c); | |
| 4138 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4139 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
| 4140 jobject res = JNIHandles::make_local(env, result); | |
| 4141 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4142 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4143 } | |
| 4144 return res; | |
| 4145 JVM_END | |
| 4146 | |
| 4147 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4148 | |
| 4149 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
| 4150 JVMWrapper("JVM_SupportsCX8"); | |
| 4151 return VM_Version::supports_cx8(); | |
| 4152 JVM_END | |
| 4153 | |
| 4154 | |
| 4155 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
| 4156 JVMWrapper("JVM_CX8Field"); | |
| 4157 jlong res; | |
| 4158 oop o = JNIHandles::resolve(obj); | |
| 4159 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4160 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
| 4161 | |
| 4162 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
| 4163 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
| 4164 | |
| 4165 return res == oldVal; | |
| 4166 JVM_END | |
| 4167 | |
|
116
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|
4168 // DTrace /////////////////////////////////////////////////////////////////// |
|
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diff
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|
4169 |
|
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|
4170 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
|
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|
4171 JVMWrapper("JVM_DTraceGetVersion"); |
|
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diff
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|
4172 return (jint)JVM_TRACING_DTRACE_VERSION; |
|
018d5b58dd4f
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diff
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|
4173 JVM_END |
|
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diff
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|
4174 |
|
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diff
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|
4175 JVM_ENTRY(jlong,JVM_DTraceActivate( |
|
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diff
changeset
|
4176 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
|
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diff
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|
4177 JVM_DTraceProvider* providers)) |
|
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diff
changeset
|
4178 JVMWrapper("JVM_DTraceActivate"); |
|
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diff
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|
4179 return DTraceJSDT::activate( |
|
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diff
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|
4180 version, module_name, providers_count, providers, CHECK_0); |
|
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|
4181 JVM_END |
|
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4182 |
|
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4183 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
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4184 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4185 return DTraceJSDT::is_probe_enabled(method); |
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4186 JVM_END |
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4187 |
|
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4188 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4189 JVMWrapper("JVM_DTraceDispose"); |
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4190 DTraceJSDT::dispose(handle); |
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4191 JVM_END |
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4192 |
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4193 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4194 JVMWrapper("JVM_DTraceIsSupported"); |
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4195 return DTraceJSDT::is_supported(); |
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4196 JVM_END |
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4197 |
| 0 | 4198 // Returns an array of all live Thread objects (VM internal JavaThreads, |
| 4199 // jvmti agent threads, and JNI attaching threads are skipped) | |
| 4200 // See CR 6404306 regarding JNI attaching threads | |
| 4201 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
| 4202 ResourceMark rm(THREAD); | |
| 4203 ThreadsListEnumerator tle(THREAD, false, false); | |
| 4204 JvmtiVMObjectAllocEventCollector oam; | |
| 4205 | |
| 4206 int num_threads = tle.num_threads(); | |
| 1142 | 4207 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
| 0 | 4208 objArrayHandle threads_ah(THREAD, r); |
| 4209 | |
| 4210 for (int i = 0; i < num_threads; i++) { | |
| 4211 Handle h = tle.get_threadObj(i); | |
| 4212 threads_ah->obj_at_put(i, h()); | |
| 4213 } | |
| 4214 | |
| 4215 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
| 4216 JVM_END | |
| 4217 | |
| 4218 | |
| 4219 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
| 4220 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
| 4221 // the corresponding entry in the given threads array | |
| 4222 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
| 4223 JVMWrapper("JVM_DumpThreads"); | |
| 4224 JvmtiVMObjectAllocEventCollector oam; | |
| 4225 | |
| 4226 // Check if threads is null | |
| 4227 if (threads == NULL) { | |
| 4228 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4229 } | |
| 4230 | |
| 4231 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
| 4232 objArrayHandle ah(THREAD, a); | |
| 4233 int num_threads = ah->length(); | |
| 4234 // check if threads is non-empty array | |
| 4235 if (num_threads == 0) { | |
| 4236 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
| 4237 } | |
| 4238 | |
| 4239 // check if threads is not an array of objects of Thread class | |
|
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4240 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
| 1142 | 4241 if (k != SystemDictionary::Thread_klass()) { |
| 0 | 4242 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
| 4243 } | |
| 4244 | |
| 4245 ResourceMark rm(THREAD); | |
| 4246 | |
| 4247 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
| 4248 for (int i = 0; i < num_threads; i++) { | |
| 4249 oop thread_obj = ah->obj_at(i); | |
| 4250 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
| 4251 thread_handle_array->append(h); | |
| 4252 } | |
| 4253 | |
| 4254 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
| 4255 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
| 4256 | |
| 4257 JVM_END | |
| 4258 | |
| 4259 // JVM monitoring and management support | |
| 4260 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
| 4261 return Management::get_jmm_interface(version); | |
| 4262 JVM_END | |
| 4263 | |
| 4264 // com.sun.tools.attach.VirtualMachine agent properties support | |
| 4265 // | |
| 4266 // Initialize the agent properties with the properties maintained in the VM | |
| 4267 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
| 4268 JVMWrapper("JVM_InitAgentProperties"); | |
| 4269 ResourceMark rm; | |
| 4270 | |
| 4271 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 4272 | |
| 4273 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
| 4274 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
| 4275 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
| 4276 return properties; | |
| 4277 JVM_END | |
| 4278 | |
| 4279 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
| 4280 { | |
| 4281 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
| 4282 JvmtiVMObjectAllocEventCollector oam; | |
| 4283 | |
| 4284 if (ofClass == NULL) { | |
| 4285 return NULL; | |
| 4286 } | |
| 4287 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
| 4288 // Special handling for primitive objects | |
| 4289 if (java_lang_Class::is_primitive(mirror())) { | |
| 4290 return NULL; | |
| 4291 } | |
|
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4292 Klass* k = java_lang_Class::as_Klass(mirror()); |
| 6983 | 4293 if (!k->oop_is_instance()) { |
| 0 | 4294 return NULL; |
| 4295 } | |
| 4296 instanceKlassHandle ik_h(THREAD, k); | |
| 4297 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
| 4298 if (encl_method_class_idx == 0) { | |
| 4299 return NULL; | |
| 4300 } | |
| 1142 | 4301 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
| 0 | 4302 objArrayHandle dest(THREAD, dest_o); |
|
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4303 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
| 6983 | 4304 dest->obj_at_put(0, enc_k->java_mirror()); |
| 0 | 4305 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
| 4306 if (encl_method_method_idx != 0) { | |
|
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|
4307 Symbol* sym = ik_h->constants()->symbol_at( |
| 0 | 4308 extract_low_short_from_int( |
| 4309 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4310 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4311 dest->obj_at_put(1, str()); | |
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4312 sym = ik_h->constants()->symbol_at( |
| 0 | 4313 extract_high_short_from_int( |
| 4314 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4315 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4316 dest->obj_at_put(2, str()); | |
| 4317 } | |
| 4318 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 4319 } | |
| 4320 JVM_END | |
| 4321 | |
| 4322 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
| 4323 jint javaThreadState)) | |
| 4324 { | |
| 4325 // If new thread states are added in future JDK and VM versions, | |
| 4326 // this should check if the JDK version is compatible with thread | |
| 4327 // states supported by the VM. Return NULL if not compatible. | |
| 4328 // | |
| 4329 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4330 // to the Java thread state that the JDK supports. | |
| 4331 // | |
| 4332 | |
| 4333 typeArrayHandle values_h; | |
| 4334 switch (javaThreadState) { | |
| 4335 case JAVA_THREAD_STATE_NEW : { | |
| 4336 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4337 values_h = typeArrayHandle(THREAD, r); | |
| 4338 values_h->int_at_put(0, java_lang_Thread::NEW); | |
| 4339 break; | |
| 4340 } | |
| 4341 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4342 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4343 values_h = typeArrayHandle(THREAD, r); | |
| 4344 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
| 4345 break; | |
| 4346 } | |
| 4347 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4348 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4349 values_h = typeArrayHandle(THREAD, r); | |
| 4350 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
| 4351 break; | |
| 4352 } | |
| 4353 case JAVA_THREAD_STATE_WAITING : { | |
| 4354 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
| 4355 values_h = typeArrayHandle(THREAD, r); | |
| 4356 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
| 4357 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
| 4358 break; | |
| 4359 } | |
| 4360 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4361 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
| 4362 values_h = typeArrayHandle(THREAD, r); | |
| 4363 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
| 4364 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
| 4365 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
| 4366 break; | |
| 4367 } | |
| 4368 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4369 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4370 values_h = typeArrayHandle(THREAD, r); | |
| 4371 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
| 4372 break; | |
| 4373 } | |
| 4374 default: | |
| 4375 // Unknown state - probably incompatible JDK version | |
| 4376 return NULL; | |
| 4377 } | |
| 4378 | |
| 4379 return (jintArray) JNIHandles::make_local(env, values_h()); | |
| 4380 } | |
| 4381 JVM_END | |
| 4382 | |
| 4383 | |
| 4384 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
| 4385 jint javaThreadState, | |
| 4386 jintArray values)) | |
| 4387 { | |
| 4388 // If new thread states are added in future JDK and VM versions, | |
| 4389 // this should check if the JDK version is compatible with thread | |
| 4390 // states supported by the VM. Return NULL if not compatible. | |
| 4391 // | |
| 4392 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4393 // to the Java thread state that the JDK supports. | |
| 4394 // | |
| 4395 | |
| 4396 ResourceMark rm; | |
| 4397 | |
| 4398 // Check if threads is null | |
| 4399 if (values == NULL) { | |
| 4400 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4401 } | |
| 4402 | |
| 4403 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
| 4404 typeArrayHandle values_h(THREAD, v); | |
| 4405 | |
| 4406 objArrayHandle names_h; | |
| 4407 switch (javaThreadState) { | |
| 4408 case JAVA_THREAD_STATE_NEW : { | |
| 4409 assert(values_h->length() == 1 && | |
| 4410 values_h->int_at(0) == java_lang_Thread::NEW, | |
| 4411 "Invalid threadStatus value"); | |
| 4412 | |
| 1142 | 4413 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4414 1, /* only 1 substate */ |
| 4415 CHECK_NULL); | |
| 4416 names_h = objArrayHandle(THREAD, r); | |
| 4417 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
| 4418 names_h->obj_at_put(0, name()); | |
| 4419 break; | |
| 4420 } | |
| 4421 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4422 assert(values_h->length() == 1 && | |
| 4423 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
| 4424 "Invalid threadStatus value"); | |
| 4425 | |
| 1142 | 4426 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4427 1, /* only 1 substate */ |
| 4428 CHECK_NULL); | |
| 4429 names_h = objArrayHandle(THREAD, r); | |
| 4430 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
| 4431 names_h->obj_at_put(0, name()); | |
| 4432 break; | |
| 4433 } | |
| 4434 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4435 assert(values_h->length() == 1 && | |
| 4436 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
| 4437 "Invalid threadStatus value"); | |
| 4438 | |
| 1142 | 4439 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4440 1, /* only 1 substate */ |
| 4441 CHECK_NULL); | |
| 4442 names_h = objArrayHandle(THREAD, r); | |
| 4443 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
| 4444 names_h->obj_at_put(0, name()); | |
| 4445 break; | |
| 4446 } | |
| 4447 case JAVA_THREAD_STATE_WAITING : { | |
| 4448 assert(values_h->length() == 2 && | |
| 4449 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
| 4450 values_h->int_at(1) == java_lang_Thread::PARKED, | |
| 4451 "Invalid threadStatus value"); | |
| 1142 | 4452 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4453 2, /* number of substates */ |
| 4454 CHECK_NULL); | |
| 4455 names_h = objArrayHandle(THREAD, r); | |
| 4456 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
| 4457 CHECK_NULL); | |
| 4458 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
| 4459 CHECK_NULL); | |
| 4460 names_h->obj_at_put(0, name0()); | |
| 4461 names_h->obj_at_put(1, name1()); | |
| 4462 break; | |
| 4463 } | |
| 4464 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4465 assert(values_h->length() == 3 && | |
| 4466 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
| 4467 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
| 4468 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
| 4469 "Invalid threadStatus value"); | |
| 1142 | 4470 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4471 3, /* number of substates */ |
| 4472 CHECK_NULL); | |
| 4473 names_h = objArrayHandle(THREAD, r); | |
| 4474 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
| 4475 CHECK_NULL); | |
| 4476 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
| 4477 CHECK_NULL); | |
| 4478 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
| 4479 CHECK_NULL); | |
| 4480 names_h->obj_at_put(0, name0()); | |
| 4481 names_h->obj_at_put(1, name1()); | |
| 4482 names_h->obj_at_put(2, name2()); | |
| 4483 break; | |
| 4484 } | |
| 4485 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4486 assert(values_h->length() == 1 && | |
| 4487 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
| 4488 "Invalid threadStatus value"); | |
| 1142 | 4489 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4490 1, /* only 1 substate */ |
| 4491 CHECK_NULL); | |
| 4492 names_h = objArrayHandle(THREAD, r); | |
| 4493 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
| 4494 names_h->obj_at_put(0, name()); | |
| 4495 break; | |
| 4496 } | |
| 4497 default: | |
| 4498 // Unknown state - probably incompatible JDK version | |
| 4499 return NULL; | |
| 4500 } | |
| 4501 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
| 4502 } | |
| 4503 JVM_END | |
| 4504 | |
| 4505 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
| 4506 { | |
| 4507 memset(info, 0, sizeof(info_size)); | |
| 4508 | |
| 4509 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
| 4510 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4511 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4512 | |
| 4513 // when we add a new capability in the jvm_version_info struct, we should also | |
| 4514 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
| 4515 // counter defined in runtimeService.cpp. | |
| 4516 info->is_attachable = AttachListener::is_attach_supported(); | |
| 4517 #ifdef KERNEL | |
| 4518 info->is_kernel_jvm = 1; // true; | |
| 4519 #else // KERNEL | |
| 4520 info->is_kernel_jvm = 0; // false; | |
| 4521 #endif // KERNEL | |
| 4522 } | |
| 4523 JVM_END |